Wright DJ et al. Three planets orbiting Wolf 1061. Astrophysical Journal Letters, December 2015.

Astronomers from Australia have discovered the closest potentially habitable planet outside our solar system. They named it Wolf 1061c. It is four times the mass of Earth and only 14 light years away (126 trillion kilometers). The closest exoplanet discovered so far was Gliese 667c, which is 22 light years from earth. Wolf 1061c is located in the constellation Ophiucus and is one of three planets that orbit around a red dwarf star, Wolf 1061. Scientists find this discovery particularly exciting, because all three planets have low enough mass to have potentially solid rocky surfaces, unlike gaseous planets, such as Neptune. The one orbiting closest to Wolf 1061 would be too hot and the furthest one would be too cold. But the one in the middle, Wolf 1061c, is potentially optimum for generating temperatures just right for the formation of liquid water and, ultimately, life. Red dwarfs are known to be very active with X-ray bursts and super flares, which doom the possibility of any life. However, Wolf 1061 seems to be a quiet star, and very similar to our sun. The next challenge for scientists is to develop a method to study the atmosphere of Wolf 1061c to conclusively say whether it is conducive to life.

Most cancers are found to be avoidable

Wu S. et al. Substantial contribution of extrinsic risk factors to cancer development. Nature, December 2015.

It has been long recognized that cancer is caused by a mix of factors, including genes, lifestyle, and environment. However, the relative contributions of each factors have never been settled. A recent study found that the risk of developing most cancers is more correlated to lifestyle and environmental factors than genes and DNA mutations. The biggest risk factors are diet, sun exposure, UV radiation, tobacco, alcohol, the human papilloma virus, and hepatitis B and C. They make up between 70% and 90% of several types of cancer, including lung, colorectal, skin, and cervical. Researchers particularly focused on people who move from a low-risk cancer area to a high-risk cancer area, and found that migrated people soon developed diseases at significant rates consistent with new risky environments. They also analyzed a comprehensive set of specific mutations associated with certain cancers. Ultraviolet light, for example, creates a signature of mutations in DNA. When cross-compared, spontaneous mutations during cell division rarely reaches the frequencies of producing cancer mutations, even in tissues with high rates of cell division. In almost all cases, the research team found that some exposure to environmental factors would be needed to trigger the disease. So if you smoke or are overweight or tan for hours under the sun, you dramatically increase your odds getting cancer. You can do a lot to reduce your cancer risk; you can’t just blame “bad genes” for getting sick.

Mutant mosquitos to stop malaria

Gantz VM et al. Highly efficient Cas9-mediated gene drive for population modification of the malaria vector mosquito Anopheles stephensi. PNAS, December 2015.

The tiny mosquito is one of the deadliest weapons in human history. Malaria is thought to be the oldest and deadliest disease. Despite intense efforts at treatment and eradication, it still is a reason for the death of approximately half a million people per year. So researchers have changed their tactics and tried to treat mosquitos instead of humans. Researchers used the revolutionary gene-editing technique CRISPR-Cas9 and generated a new breed of malaria with two genetic modifications. The first modified gene released antibodies against the malarial parasite and rendered its host immune to the parasite. The second modified gene, called “the gene drive,” would copy and paste the malaria-resistant genes into another mosquito, when mated. This two-gene system has the potential to spread malaria resistance across a wild population in just 10 generations – in other words, a single summer. Experts think that further research is needed before conducting a field trial. One potential problem would be to create a “hole” in the eco-system by changing the balance of malaria-carrying mosquito species. However, since the approach does not kill mosquitos rather make them resistant to the parasites, only a small amount of ecological damages are expected.

Our sun is a single star system, but using new technology, scientists are discovering double – and even triple! – star systems

The planets of the sun revolve around a single star, just like the planets in many systems. Revolving around a single star is the general principle, but scientists have recently discovered planets that revolve around two stars, without causing any irregularities. Planets that revolve around two stars are accepted as a new class of planets and according to calculations their numbers in the Milky Way galaxy are estimated to reach at least ten million.

How can this be possible? A planet traveling around two stars enters the gravitational field of each star during its motion, and its velocity and orbit constantly changes.

If stars can shade (eclipse) each other, it is possible for one planet to shade one or two stars. When this event takes place, the planet and stars orbit on the same plane. This intersection on the same orbital plane means that the planet and star have passed in front of each other; we can measure this due to a reduction in the amount of light emitted by the star. If the distance between the two stars is too long, these stars act as if they are isolated from each other. In that moment, the planet that is moving on one of the star’s orbits does not feel the effect of the other star. These are called S-type planets and dozens of them have been discovered in the last decade.

Interesting events take place when stars get close to each other. In such cases, the time required for stars to make a complete revolution around each other is described in days or weeks. The ability of a planet to move in “braided pathways”^[1] that will allow a stable orbit around two stars that are so close to each other cannot be a coincidental event without fine adjustments.

S-type systems are only one type of double-star systems. In P-type systems, the planet revolves around the two stars simultaneously. For this type of planet to travel in a stable orbit, the orbital distance from the stars must be longer than a critical distance. If it is closer than this critical distance, the planet’s orbit becomes progressively unstable, and it is either pulled towards one of the two stars and collides, or gets thrown into outer space. This critical distance is 2/3 of the star’s magnitude.

In a system of a single star and planet, the transit of the planet occurs as if the light makes a periodic movement, such as when a light house rotates around itself. These passes allow us to detect stars. Double-star planet systems are another example of this. It is not easy to estimate the movement of an object consisting of three elements. In a single-star system, the star’s movements are stable; thus, it is easy to estimate the movement of a planet. Yet in a double-star system, the distance between the two stars is much shorter than their distances to the planet; for this reason, these stars revolve at a higher speed around each other than the planet revolves around them. This means that the planet’s rotation is difficult to predict.

As a result, the planetary movement of a double-star system will not be periodical; different than that of a single-star system, the time of transit passes will vary according to the relative motion of the planet to the star. If the planet and the star it revolves around are moving in the same direction, the transit pass time will be longer; but if the star is located at the other half portion of the orbit and traveling in the opposite direction, the transit passing time will be much shorter.

The Kepler spacecraft and telescope that NASA launched in March 2009 is designed for detecting planets that cause reductions in the light of stars when they are passing in front of them. Today, more than two thousand twin star systems that display eclipses have been discovered. Two planets that revolve around stars eclipsing each other every 7.5 days were discovered and called the Kepler-47 system. Along with these double star systems, a triple-star system has been discovered through the Kepler telescope; the properties of this system are extraordinary.

Among these, planet Kepler-47b of the inner region completes its voyage around its stars in less than 50 days. In addition, this planet, which is not visible directly, is predicted to be a very hot planet. Since a foggy layer inhibiting its visualization is found to have formed as the result of methane gas combusting in its hot atmosphere. Kepler-47b, which is three times bigger than the Earth’s radius, is the smallest planet among those that have been discovered in two-star systems.

The planet Kepler-47c of the outer region completes its one full tour around its twin stars in 303 days and it moves in a region that is described as the habitable zone in the Milky Way galaxy. There can be liquid water present on the surface of a planet in the habitable zone. However, just being in this zone does not totally mean that the place is suitable for life. Kepler-47c is predicted to be slightly bigger than Neptune and to have an atmosphere composed of thin and bright water-vapor cloud.

Reference

William F. Welsh, Laurance R. Doyle, “Worlds with Two Suns,” Scientific American, October 2013, pp. 40-47.

S- And P- type planets traveling around two stars

Kepler-47c exists in the habitable zone and liquid water is predicted to be present on its surface.

A representative image of the Kepler 16a/b based on acquired data.

^[1] The Qur’anic verse “By the heaven full of braided pathways, surely you are in contradicting views”(Adh-Dhariyat, 51:7-8) sounds like pointing to this phenomenon.

a

“Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize we cannot eat money.” Cree Indian Proverb

The table I have under my laptop while writing this article, the materials used for my laptop, the cover case for my phone, the pen I have by my phone, the package for the mail I have received, the dividers I have in my notebook, the hair dryer I have for drying my samples before performing FT-IR on my samples, the FT-IR machine itself … They are all made up of plastics. I could go on and on, giving examples of what I observe in my immediate environment made of plastics. It would not be exaggerated to say that after the Stone Age, Bronze Age, and Iron Age, we are now living in the “Plastic Age” given the fact that the production of plastics has increased from 1.5 million tons per year in the 1950’s to 260 million tons per year in 2007.1 The majority of plastics we use in our daily life are petroleum-based plastics. What that means is, the starting materials of these plastics are chemicals derived from crude oil. There are some major concerns related with these petroleum based plastics – the Earth may run out of oil one day, or the questionable durability of how these plastics biologically degrade. Further environmental concerns exist, such as the toxic additives these plastics contain, including plasticizers like adipates and phthalate. Burning these plastics can release billions of tons of toxic pollutants every year; moreover, most plastic production reactions are done in toxic solvents, so the disposal of these solvents becomes a problem.2 Reflecting on it, it’s an incredible mercy that we have been able to get away with all the waste we have produced up to this point. But the question is: how much longer can we get away with such wasteful behavior?

One of Paulo Coelho’s passages from his book The Winner Stands Alone exactly describes my attitude and desire to “go green.” My heart pounds as I read the sentences that so touched me:

It seems now that-despite wars, famine in Africa, terrorism, the violation of human rights, and the arrogant attitude of certain developed countries-our main preoccupation is saving poor planet Earth from the many threats created by human society. “Ecology. Save the planet. How ridiculous.”

Hamid knows, however, that there’s no point in fighting the collective unconscious. The colors, the accessories, the fabrics, the so-called charity events attended by the Superclass, the books being published, the music being played on the radio, the documentaries made by ex-politicians, the new films, the material used to make shoes, the new bio-fuels, the petitions handed in to members of parliament and congressmen, the bonds being sold by the largest of the world banks, everything appears to focus on one thing: saving the planet. Fortunes are made overnight; large multinationals are given space in the press because of some completely irrelevant action they are taking; unscrupulous NGOs place advertisements on the major TV channels and receive hundreds of millions of dollars in donations because everyone seems obsessed with the fate of the Earth. Whenever he reads articles in newspapers or magazines written by politicians using global warming or the destruction of the environment as a platform for their electoral campaigns, he thinks:

“How can we be so arrogant? The planet is, was, and always will be stronger than us. We can’t destroy it; if we overstep the mark, the planet will simply erase us from its surface and carry on existing. Why don’t they start talking about not letting the planet destroy us? Because ‘saving the planet’ gives a sense of power, action, and nobility. Whereas ‘not letting the planet destroy us’ might lead to feelings of despair and impotence, and to a realization of just how very limited our capabilities are.” 3

On that note I would like to share some amazing facts I found while searching articles written on bacterial biopolymers, but first of all I would like to introduce some definitions on the concepts I will be writing about.

Plastics have many definitions, but usually, in a daily conversation, plastics mean “anything that can be molded or shaped.” Scientifically, a plastic is a sub category of a polymer. Poly- meaning “more than one” and -mer meaning “member of a particular group.”[4] Basically, a polymer is a naturally occurring or synthetic compound made of many relatively simple repeating units that are linked together in the same fashion, forming a carbon rich backbone in most cases. For example, PVC is a well known synthetic polymer, in which the monomer (the repeating unit) as seen in Figure 1 is repeated several times. A well known natural polymer is cellulose, in which the monomer as seen in Figure 2 is repeated several times.

Here it is important to note the difference between a polymer and a plastic. All plastics are polymers, as in the example of PVC, whereas not all polymers are plastics, as in the example of cellulose. The combination of the chemicals, and the type of bonds these chemicals are linked to each other by, determines the properties and applications of the polymers. The molecular weight of the polymer depends on how many times the monomer repeats itself. The molecular weight of polymers can be controlled during production with chemical techniques. One significant difference between natural vs. synthetic polymers is the molecular weight distribution. When the polymer is synthesized in the lab, the polymer product is a combination of different molecular weight chains. In other words, when a polymerization reaction takes place, lots of polymer chains are produced and one chain is never the same length or weight as another. Instead, there is a molecular weight distribution as seen in Figure 3, where most of the polymer chains in the solution have a molecular weight close to the value of Mw. So in the solution, we will have polymer chains that have molecular weights close to each other, and some extreme short or long polymer chains. It is impossible to synthesize a polymeric solution where all the polymer chains are of identical length and weight; therefore, we speak about the average molecular weight when the case is synthetic polymers. However, when we look at any polymer produced in nature, we see that the polymer chain length and molecular weight are the same every time the polymer is produced. So instead of a molecular weight distribution, natural polymers have a molecular weight value. This is important because the narrower the molecular weight distribution is, the better.

When talking about bio plastics, it is important to make the differentiation between bio-derived plastics and bio-based plastics. As Dr. R. Narayan explained in his talk at Johnson County Community College[5] , bio-derived plastics means that the plastic is isolated from a living organism, meaning that the living organism performs the polymerization reaction and then you extract the polymer from the organism.

On the other hand, bio-based plastics mean that the starting material of the plastic is derived from a living organism instead of a petroleum-based material, but it is polymerized into a plastic by humans. Therefore, not all bio-based plastics are biodegradable; however, the fact that the starting material is from a plant that can be replaced in a couple of years rather than a petroleum-based product which can only be replaced after a couple million years, drives motivation for their usage. There is the ethical concern that bio-based plastics are usually made from food sources, such as corn, however Dr. R. Narayan, who is one of the leaders in the field, argues that if the situation is handled appropriately, this should not be a problem. He argues that one up-side of the situation would be to increase values of crops and the prevention of mass migration to big cities. It’s your call to decide which side you favor more.

What is more interesting to me is the polymers being created in nature. A chemistry doctorate, Dr. Lon J. Mathias, writes that “We humans make nylons in tons per day in huge chemical plants where simple molecules are joined together in large quantities to give products that we need or want. Nature is much more careful and concise in how she does things. For a living organism to make an enzyme, another enzyme or active species must be involved. The synthesis always involves a template, or recording, of how the individual amino acids are to be joined together to give the final polymer. The enzyme adds a single amino acid, one at a time, as indicated by the mRNA. This is a slow and tedious process and takes a long time. Sometimes the enzyme gets frustrated, waiting for the right amino acid to come along, and slaps a wrong one on instead. To compensate for this, the enzyme is made to back up occasionally to check its work. If it has made a mistake, it has a process for clipping out the wrong amino acid and inserting the right one. We humans never do this. If we make a mistake, we simply grind it up and throw it away.”6

Dr. Mathias goes on, comparing the manufacturing conditions between nature’s form of polymerization and humanity’s. He says polypeptides in nature are synthesized in water, whereas we synthesize our polypeptides in toxic organic solvents. “This leads us to a problem: what do we do with the organic solvents when we’re through? Sometimes we burn them, but more commonly we try to recycle these materials, which not only are getting more expensive to buy in the first place (compared to cheap water, which is everywhere, or almost everywhere) but are also a responsibility for their recycling, purification, and final disposal. An example of how nature uses water in this way, and one which we still haven’t figured out, is the production of spider silk. Spiders spin their webs from solutions of polypeptides in water. These solutions are squeezed through the spider’s tiny spinneret and elongated quickly to form the spider webs which we’ve all seen and sometimes become tangled in. What’s really weird is that, once these spider webs form, they are no longer soluble in water. If we could just figure out how spiders first make spider silk in water and then spin their webs from it, we could make nylon the same way. This might save us a lot of waste disposal problems, and money.”6

Another spectacular creation in nature is polymers produced in bacteria which can be used as plastics once isolated from the bacteria. A wide range of biopolymers that are synthesized in bacteria serve diverse biological functions and have material properties suitable for numerous industrial and medical applications.7 Different carbon sources are efficiently converted into a diverse range of polymers with varying chemical and material properties.7 To be a little more specific, four major classes of polymers are produced by bacteria: polysaccharides, polyesters, polyamides and inorganic polyanhydrides (such as polyphosphates).7 These polymers serve various biological functions, for example, as reserve material or as part of a protective structure, and can provide a substantial advantage for bacteria under certain environmental conditions.7 Some of these biopolymers can be isolated from bacteria and can be used as plastic. Biopolymers are, by definition, biodegradable, and so their application as commodity products becomes increasingly attractive in view of the desire to avoid the use of recalcitrant oil based polymers that will accumulate in the environment.7 Biodegradable means that when exposed to the microbial flora present in a given environment (for example, in soil or water), biopolymers are fully degraded and mineralized to CO2 and H2O.5 The reason biopolymers are 100% degradable is, as they are produced in bacteria as storage material, they have sites where bacterial enzymes could attack to break them down when they search for nutrients. Whereas other polymers – even bio based polymers – will not have these enzymatic sites, so they are not always biodegradable.

One popular class of polymers produced by bacteria which can be used as plastics is called polyhydroxyalkanoates (PHA’s). PHA’s are a class of polymers produced in nature by the bacterial fermentation of sugar or lipids. They are produced by bacteria to store carbon and energy when there is a nutrient lacking from the environment. Many kinds of bacteria are able to produce PHA’s, such as soil inhabiting bacteria, and many bacteria in activated sludge, high seas, or extreme environments. 8 As we store fats in our bodies, the bacterium store PHA’s. In an environment that contains all of the necessary nutrients, bacteria grow and reproduce – in other words they produce biomass. However, when subjected to specific nutrient depletion (nutrients such as nitrogen or phosphorus) and excess amount of carbon resources, the bacterium starts storing PHA granules (Picture 3). The moment the missing nutrient is introduced back into the environment, the bacterium starts degrading the PHA granules and continues to produce biomass. Therefore, by manipulating the nutrient resources in the environment and providing optimum conditions, bacterium can be pushed to produce PHA’s.[9]

There are metabolic pathways involving various enzymes for the conversion of carbon sources to polymers. Scientists have been trying to genetically engineer bacteria for the increased production of these polymers. In some cases it is possible to over-express the key enzymes in the pathways to achieve increased production of PHA. However, this kind of research takes a lot of time and effort because altering biological activity is a very complicated process and in most cases, cells give unpredictable responses to alterations. By feeding the bacterium with different carbon sources at different conditions, it is also possible to alter the composition of the polymers. Moreover, different strains of bacterium produce different types of polymers; therefore, the range of biopolymer research is very wide. With over 150 different PHA monomers (the repeating unit of polymers) being reported, PHA with flexible thermal and mechanical properties have been developed. 7 Such diversity has allowed the development of various applications.

During his speech at the “2nd International PLASTiCE Conference Trends in Bioplastics” in Slovenia, 9 Dr. Martin Koller explained that there are two types of PHA’s that a microorganism produces. The first type are short length PHA’s (3-5 carbons in the backbone) and the second type are medium chain length PA’s (6-12 carbons in the backbone). While the medium chain length PHA’s can be used for biodiesel production, the short chain length PHA’s can be used as thermoplastics (plastics that can melt with heat, and can therefore be processed with the help of heat). These thermoplastics can be isolated from the organisms they are produced in by solvent extraction, mechanical disruption, or by using hypotonic media (having the lower osmotic pressure of two fluids) for cells that have high intracellular osmotic pressure.9 In the last case, the cells will explode due to the pressure difference and release the PHA’s; deionized water can be used as the hypotonic media. However, only specific strains can be treated with this method. At the moment, the most common technique used for extraction is solvent extraction. These solvents – such as chloroform or dichloromethane – are generally toxic, therefore creating a contradiction with the point of producing biopolymers.

Although not mainstream, some of these bacterial plastics are produced in the industrial world.8 The simplest and widest application for bacterial plastics is for packaging purposes. They can also be used in therapeutic applications, as they are generally biocompatible. Drugs can be incorporated into them, therefore as they biodegrade, they release the drug in a controlled time frame.9 For example, Dr. Martin Koller and his group have just finalized a project called “BRIC – BioResorbable Implants for Children,” funded by the Austrian Research Promotion Agency (FFG).10 Their purpose was to isolate a biocompatible polymer produced from bacterium which could be degraded and removed from the body within a certain time. The point of this project is based on the fact that in contrast to the traditional implants that need to be removed from the body after a certain amount of time, such as plates, screws or pins, the newly developed implants could be degraded and removed from the body naturally, preventing the need for a second surgery. This is a great advantage, especially for children, who would suffer greatly from additional surgeries.

Bacterial bioplastics have many other applications; however the biggest obstacle for their usage is the cost of production. During his speech, Dr. Keller stated the production of bacterial bioplastics is around five times more costly than petroleum based plastics. Most of the cost is related with the bioreactors needed to grow the bacterium and the solvents used to extract the polymers. The scientists are hoping to develop new techniques to reduce the cost of the polymers.

It is breathtaking that these creatures we cannot even see with the naked eye have been synthesizing polymers as well as we do, if not even better, and for a lot longer than us. The polymers they synthesize are completely biodegradable, have a constant molecular weight, and do not require toxic chemicals for their production, unlike the synthetic polymers we produce in the lab. They don’t harm nature as we do. And THAT is powerful.

References

1- Simon, Tristan (2007). “Experience Curves in the World Polymer Industry” Utrecht University, Netherlands.

2- Lei Pei, Markus Schmidt and Wei Wei (2011). “Conversion of Biomass into Bioplastics and Their Potential Environmental Impacts, Biotechnology of Biopolymers.” InTech.

3- Coelho Paulo(2008), “The Winner Stands Alone.” pg: 139.

4- http://dictionary.reference.com/

5- Narayan, Ramani (2013)”Bioplastics and Reducing Carbon Footprint.” JCCC Video. Johnson County Community College, USA.

6- Mathias, Lon J. (2005).”Natural Polymers.” Polymer Science Learning Center. The University of Southern Mississippi, USA.

7- Rehm, Bernd H.A.(2010). “Bacterial polymers: biosynthesis, modifications and applications” Nature Reviews Microbiology. Massey University, New Zealand.

8- Chen, Guo-Qiang (2010). “Plastics Completely Synthesized by Bacteria: Polyhydroxyalkanoates”. Plastics from Bacteria: Natural Functions and Applications, Microbiology Monographs, Springer. Tsinghua University, China.

9- Koller, Martin (2012). “Polyhydroxyalkanoates: Biodegradable polymeric materials from renewable resources” Plastice Project Video. 2nd International PLASTiCE Conference Trends in Bioplastics, Slovenia.

10- No name (2013).”Plastics from Renewable Raw Materials:Body automatically breaks down implants” Graz University of Technology, Austria.

11- Nishiyama, Yoshiharu; Langan, Paul; Chanzy, Henri (2002). “Crystal Structure and Hydrogen-Bonding System in Cellulose Iβ from Synchrotron X-ray and Neutron Fiber Diffraction”. J. Am. Chem.The University of Tokyo, Japan.

12- Ritter, Stephen(2005). “Green Success.” Science and Technology. pg: 40-43.

13- Waters Co. (2013). “GPC-Gel Permeation Chromatography”. Web.

Though we cannot see humor, like faith, we perceive it all around us.

Once upon a time there was a planet in an unknown corner of the vast universe. For a long time, this planet was distinguished by having inhabitants with no sense of humor at all! This sounds like a joke, doesn’t it? But I am here to tell history, not jokes. This planet’s history was studied in three eras, each having a different state of humor: the Ancient Period, the Middle Period, and the Modern Period.

I. Modern period

The inhabitants of this planet were extremely serious, conscientious, sincere, hard-working, and moral. Besides all these good qualities, they considered humor as a pathological phenomenon. They never laughed or jested, kidded or joked. There was no room for any kind of humor.

A small minority, who had some feeling for humor, occasionally laughed and joked. However, their behavior was extremely alarming to everyone else. These few people were called “laughers,” and they were promptly hospitalized. What was so obnoxious about their behavior, aside from the strange noises they made and the peculiar facial expressions they bore while “laughing,” were the utterly pathological things they said! They seemed to lose all sense of reality. They said things which were totally irrational, indeed sometimes logically self-contradictory. In short, they behaved exactly like anyone else who was deluded or hallucinating, hence why they were put into hospitals.

More importantly, it was definitely verified that this “laughter” was somewhat contagious and that certain individuals became laughers for the first time in their life only after repeated contact with other laughers. Indeed, this was another thing which made the laughers so dangerous. They were not only hallucinating themselves, but tended to pass these hallucinations to others! Hence they had to be hospitalized, not only for their own sakes, but also for the sake of the society.

In the hospitals, doctors tried quite a number of different treatment regimens to cure their pathologic behavior. Besides many unsuccessful treatment attempts, one drug, called “laughazone,” was finally found to kill the symptoms of humor. Almost immediately upon administration, the patient would stop laughing as well as quit the verbal activity called “joking,” and would instead start screaming. The patient would just lie there screaming, hour after hour, day after day, week after week, and month after month. And the most amazing thing of all is that not once during this screaming period did the patient ever laugh or make a joke or even smile. They thought this drug was really phenomenal!

The problem with “laughazone,” though, was that its effects were temporary. After the months long treatment, the patient would, for some unknown reason, fall into a deep state of depression for several weeks, and sometimes longer. After this, he would gradually convalesce, and his original symptoms of laughing and joking would return. So, the doctors had to put the patient through the treatment again and again.

II. Ancient and middle period

The Modern Period contained no literature at all on laughter, except in textbooks and periodicals on abnormal psychology. The Middle Period, on the contrary, was chock-full of laugh-literature. This literature contained absolutely no material which contemporary laughers called “funny.” Indeed the writings were written in a wholly sane, serious, scholarly, and philosophic mood. The writings consisted mainly of analysis and commentary on the ancient texts. The ancient writings, unlike those of the middle period, were totally non-philosophical. They never spoke about laughter or anything like that. They were simply what the Middle Period called “funny.” These archaic manuscripts contained all sorts of incomprehensible and contradictory material called “jokes” or “funny stories.” Therefore, philosophers of the Middle Period extolled the Ancient Period, and referred to it as “the golden age of humor, when men could freely laugh and joke and really enjoy life.” Appreciating the ancient writings required a certain, almost mystical, faculty called “humor.” What was so puzzling was that humor could not flourish in the wholly serious and rational atmosphere of the Middle Period.

So, the Middle period witnessed many discussions on humor. One such discussion which had taken place between the mystic-humorists and the skeptical anti-humorists went as follows:

The Mystic-Humorists claimed that the only reliable way humor could be known was by direct perception: “We can see humor in many situations. Life is permeated with humor, if you can only see it.”

The skeptical Anti-Humorists said, “So, you claim you can see humor! Tell me, what color is it?”

The Mystic-Humorists laughed and said, “Humor doesn’t have any color!”

The skeptics continued: “Oh, so you can see it only in black and white! Well, then, what shape is it?”

“It doesn’t have any form or shape.”

“Then I am confused! Is humor visible or invisible?”

“Of course it is invisible!”

“But I thought you just said that you can see it. Didn’t you say that you could see the humor of certain situations?”

“Well, yes, I said that, but I didn’t mean ‘see’ in the literal sense of ‘see with your eyes.’ Ocular vision really has nothing to do with it. I used ‘see’ in the sense of directly perceive, not see with the eyes. Perception, although as direct as vision, is really through a different sense altogether.”

“A different sense? Which sense is it – hearing? If so, what does humor sound like? Or is it smell or taste or touch or what? With which of the five senses do you perceive humor, or is it a combination of more than one of them?”

“No, it is not any one of these five senses, nor is it a combination of them. It is a totally different sense. In a way, it is a nonphysical sense. We call this sense the ‘sense of humor.'”

“Good God, you literally mean a nonphysical sense? In other words, you mean it is something occult, like telepathy or clairvoyance? But scientific integrity requires us not to believe in anything occult; hence we cannot but believe that this humor is something totally unreal, a mere figment of the imagination.”

In vain the Humor-Mystics protested that there was nothing the least bit occult about humor and said: “If only once you could see what humor was, you would realize that it is the most natural thing in the world, and also that it is delightfully pleasant.”

Another thing, the “Mystic-Humorists” claimed was that the label “Mystic-Humorist” was most misleading. They claimed that there was nothing at all mystical about humor, even though it might seem mystical to those who lacked the immediate sense of humor. They said, “Why not rather call us laughers, which is, in fact, what we are.” And so, the term “Mystic-Humorist” was gradually replaced by “laugher.” Later, this term would be used in the Modern Period as explained above.

Another discussion during the Middle Period was between the “laughers” and the Faith-Humorists, who believed that reason could be somewhat helpful in understanding humor but that an act of faith was crucial. Essentially, Faith-Humorists did not take a hostile, skeptical attitude toward the laughers, but instead believed in them wholeheartedly. They knew that the laughers were in direct contact with that which the Faith-Humorists could only reason about and accept on faith. However, they were heavily criticized by the “laughers” because of their approach to the issue:

You seem to think that knowledge about laughter is somehow more important than the ability to laugh.

You take an approach which is far too objective and scientific. You read all the literature you can find on the philosophy of humor. You perform elaborate linguistic analyses of what the word “humor” could possibly mean. The only way you will ever find out what it really means is by acquiring a sense of humor.

The most insidious error of all is to try to learn humor by merely imitating the outward forms of the laughers. You must remember that the activity of laughter is only a manifestation of humor. Humor itself is something entirely within the spirit.

Another thing that you do out of mere imitation is this ridiculous practice of memorizing jokes. You commit thousands upon thousands of jokes to memory and you think you are thereby acquiring a sense of humor! But memorizing these jokes is absolutely pointless for you until, and unless, you have acquired a sense of humor.

You combine the two techniques of joke memorization and forced laughter, and then you are sure you have matured. But God Almighty, how wrong you are! You go forth into the world claiming yourselves to be authentic laughers. Nothing sabotages our cause more than this! The skeptics who meet you are almost rightfully reinforced in their belief that humor is something which is a mere sham and delusion. Yes, the pseudo-laughers like you are the major cause of the disappearance of humor from this planet.

As laughter disappeared more and more from this planet, the people of the Middle Period realized that this was a tragic loss rather than a gain, and they did everything possible to stem the tide. Only at the very end of the Middle Period did it first occur to mankind that laughter, far from being something good, could actually be something totally undesirable. People started saying: “Maybe we should stop trying to stem the tide. Maybe the tide is our greatest blessing, although we don’t know it. Maybe it is high time that this silly archaic thing called ‘humor’ should disappear. Maybe laughter was all right for savages, and we are now becoming civilized!” Then the idea fully occurred to mankind that humor was but another form of psychosis; laughter was a type of psychopathology. Thus was ushered the Modern Period.

III. Back to the modern period

As we discussed earlier, people of the Modern Period had to accept the painful fact that the laughers were not permanently curable, at least for the foreseeable future. This fact split the medical opinion into two divergent camps; hospitals, similarly, split into two widely divergent types. Hospitals of Type I were called “laugh-scream hospitals”; those of Type II were “pure-laugh hospitals.” In the laugh-scream hospitals, the doctors realized that no patient was permanently curable. Hence, once a patient was admitted, they were admitted for life. All that could be done was to administer the laughazone treatment over and over for the rest of the patient’s life. The discipline at these hospitals was ironclad: no patient was ever released, and there was to be no letup in treatment. It was better for the patient to face reality and scream than to withdraw into his fantasy world of humor and laugh.

The philosophy of the pure-laugh hospitals was, however, entirely different. They agreed with the laugh-scream hospitals that no laugher was permanently curable. But they thought: so why not let the patient enjoy his life? Was it really all that bad that he had these fantasies? Similar to the laugh-scream hospitals, patients were incarcerated for life. But they were given no treatments whatsoever! The patients in the pure-laugh hospitals were very happy. Everything possible was done for them to ensure their happiness. The pure-laugh hospitals, in the true sense of the word, were merely isolation centers. Their only function was to prevent the inmates from infecting the outside world with their laughter-psychosis.

Thus the conditions inside the pure-laugh hospitals were close to idyllic, except for one thing! Good God, the patients cried “How unfair that our brothers are screaming themselves to death in the laugh-scream hospitals while we are free to enjoy our laughter. Those doctors at the laugh-scream hospitals! They believe that they are helping their patients! They are the maddest of all! We must find a way to free our brothers so that they can enjoy laughter as we do.”

Occasionally, patients would escape from the laugh-scream hospitals, and they would immediately rush to the pure-laugh hospitals, where they were cheerfully admitted. As the patients in the pure-laugh hospitals increased in number day by day, at last, they managed to find the loopholes in the system. It didn’t take them long to organize raids on the laugh-scream hospitals, through which they freed all the laugh-wards, and brought all the patients back to the pure-laugh hospitals. The laugh-scream hospitals eventually went out of existence.

However, laughers were not satisfied with this success. They were bothered by the thought of those outside the laugh-communities who never knew the joy of laughter. What could be done for them? Just about nothing, they decided, since the old loopholes they had used to escape were taken care of. But here, providence intervened in a very remarkable way. What happened was this:

The standard of living inside the laugh-hospital communities was far higher than outside. One by one the outsiders pretended to be laughers in order that they might be incarcerated in the laugh-communities. The pretended-laughers knew perfectly that they had no sense of humor, and they couldn’t have cared less; they deliberately lied just for the purpose of joining the laugh-communities with their high standards of living. What happened was that the lying-laughers, being surrounded by an enormous majority of genuine laughers, very soon caught the laughing sickness themselves, and in but a few weeks turned completely into genuine laughers. And so one non-laugher after another lied his way into the laugh-communities, and shortly, became a genuine laugher. Then finally, even the psychiatrists succumbed, and no non-laughers were left behind. The entire planet was now one huge laugh-hospital, and the Modern Period that was devoid of humor became the funniest era ever.

This story was adapted from Richard Smullyan’s This Book Needs No Title: A Budget of Living Paradoxes by (Englewood Cliffs, New Jersey: Prentice-Hall, 1980). Copyright (c) 1980 by Raymond M. Smullyan (Acquired necessary permissions from the author).

Nural is a graduate research assistant in computer science at the University of Georgia, Athens, Georgia.

A planet that revolves around another star outside our solar system is called an Exoplanet or Extra solar planet. Ongoing studies involving this field are carried out via simultaneous ground and space based missions and observations. Scientists are searching a small portion of the Milky Way galaxy, approximately 3000 light years away, by using ground and space telescopes, along with various other astronomic methods (1). Despite all this technology, the observation area is too big when compared to the size of the object of interest.

It has been calculated that the Milky Way, a disc shaped galaxy, consists of 200 billion stars spread over a diameter of nearly 100,000 light years and a thickness of 1000 light years. When we consider the amount of stars in a single galaxy, and the fact that there are between a hundred billion and one trillion galaxies in the universe, the number of possible exoplanets is likely much larger than those we currently know of.

Classification of exoplanets

Exoplanets are classified according to their physical, chemical, and other characteristics, along with their diameter and mass: Jupiter like; greater than Jupiter; Earth like; greater than Earth

Classifications according to surface and atmospheric temperatures are as follows: Hotter than Jupiter; colder than Neptune; colder than Jupiter; small blue dots or twin Earths.

The presences of free-floating planets which have lost their parent stars because of different formation processes or other factors have also been discovered.

One of the common features of the exoplanets currently discovered is their short distance to the star they revolve around, which is usually less than half the distance between the Earth and the Sun. The known exoplanets are also defined by their faster revolutions in much shorter periods. Therefore, larger planets that are closer to their stars can be observed easily. When these planets are passing in front of their stars, a decrease in the brightness of the star is detected via spectrometers (Figure 1).

Figure 1. Passing of a planet in front of a star and a spectrum of this event.

Radial velocity, one of the methods used to discover exoplanets, relies on the observations of a star’s kinetic fluctuations. The proximity and size of a revolving planet leads to slight changes in location and velocity of a host star. As a result of this, the star gets closer to earth and then becomes more distant, which is observed as the Doppler shift of spectral line color waves. 75 % of all known planets have been discovered using this method (Figure 2).

Figure 2. Doppler shift – radial velocity

Earth-like planets or habitable places

In an official NASA report in December 2011, the discovery of an Earth-like planet was announced for the first time. This planet, named Kepler 22b, is 600 light years away and remains the most similar one to Earth among the known heavenly bodies. The distance of Kepler 22b to its star shows a high possibility for the presence of a habitable zone.

So what does this mean?

Earth is such a special home for us humans that everything here has been assigned to serve us with delicate calculations. Factors such as the Earth’s mass, gravity, distance to the Sun, rotational and revolution velocity, chemistry, thickness of the atmosphere, magnetic shield, hydrosphere/land ratio, ecological balances, and average temperature are all perfect for biological life.

Earth revolves in such a region and position that a majority of the planetary water is in a liquid state and is not ice or vapor.Thedistance of the habitable zone to our Sun is between 135,000,000 – 225,000,000 km. Earth revolves at a 150,000,000 km distance to the Sun. The value of a habitable zone for each planet depends on the diameter, mass, heat and radiation strength of the host star. In other words, aside from the similarity of an exoplanet to Earth, a classification of its host star with in terms of size and age is also important.

Kepler 22b owns the title as the first planet to match the criteria above with its following features:

• Has a radius 2.4 times bigger than Earth
• Revolution time is 290 days (365 for Earth)
• 15% closer to its star compared to the Earth-Sun distance
• The size and surface temperature of Kepler 22b’s host star is very similar to that of the Sun’s
• The surface temperature of the planet is 22 C
• The size of the habitable zone for Kepler 22bis 133,500,000 – 240,000,000 km (Figure 3).

Figure 3. Comparison of the solar systems of Kepler 22b and Earth.

Aside from these similarities, it is noteworthy to report the problems that scientists encountered regarding Kepler 22b:

• The unknown presence of water on the surface
• No information on the gaseous contents of the atmosphere.
• The gravitational force is 2.5 times greater than on Earth.
• Rocks constitute the surface instead of soil.

The hardest part is that Kepler 22bremains 600 light years away from us. This means it would take us 11 billions years to get there with today’s fastest spacecrafts. Who knows when we will be able to decrease this time with the advent of superior technology.

What do religious scholar say about life in outer space?

Among His manifest signs is the creation of the heavens and the earth, and that He has dispersed in both of them living creatures. And He has full power to gather them together when He wills. (Ash-Shura 42:29)

While interpreting the Qur’anic verse above, Fethullah Gülen notes the following:

“Since the earliest times, this verse has been taken as a proof for the view that there are living creatures, whether resembling human beings or not, in the places other than the earth. This view may be true. The second part of the verse, ‘He has full power to gather them together when He wills,’ has been understood that these creatures and human beings will possibly come together either in this world or in that of the other creatures. … there may be earth-like globes in the heaven where creatures resembling earthly ones live.” (Gülen 2012, 272-273)

“Perhaps people will not be able to reach those places individually or as a whole generation, but this can be achieved by mankind as a species. In other words, when the Divine Will manifests itself in that direction, humans here can encounter those other life forms.” (Gülen 2007, 232)

This commentary reflects what Bediuzzaman Said Nursi had said decades ago:

“The earth, although much smaller than other heavenly bodies, is so densely inhabited by living creatures that even its grossest and most rotten parts are full of living things, such as micro-organisms. This shows that those infinite firmaments, with their numerous stars and constellations, are inhabited by conscious, living beings …” (Nursi 2010, 530-531) 29th Word, First Aim, First Fundamental)

Nebiyev is a professor of physics in Azerbaijan.

References

• http://kepler.nasa.gov/
• http://planetquest.jpl.nasa.gov/
• http://en.wikipedia.org/wiki/Habitable_zone
• Gülen, M. Fethullah. 2007. Kendi iklimimiz, Istanbul, Nil Yayinlari.
• Gülen. M. Fethullah. 2012. Reflections on the Qur’an: Commentaries on Selected Verses, NJ: Tughra Books.
• Nursi, Bediuzzaman Said. 2010. The Words, (29th Word) NJ: The Light, Inc.
• Chris Kitchin Exoplanets: Finding, Exploring, and Understanding Alien Worlds- (www.springer.com/series/6960)-2012
• Mercy, G., P. Butler et al. 2005. “Observed Properties of Exoplanets: Masses, Orbits, and Metallicitie”.. Progress of Theoretical Physics Supplement, Vol. 158, No. 24-42.

Termites are 1-2 cm in size, but they live in mud towers that can grow to five meters tall. The scale, between termite and tower, is comparable to that between a human and a skyscraper. When their life style, which seems chaotic from the outside, is investigated, one finds that termites maintain social lives within perfect urban communities. These wondrous mini cities feature air conditioning and ventilation systems, in addition to a queen chamber, and rooms for incubation and juveniles.

An instinctual sense of solidarity that has been ingrained among living organisms also plays an important role among termites. They display an amazing form of cooperation in matters like foraging and defense. As termites live in colonies, they follow a particular arrangement of duties. The queen is in charge of new generations; workers meet the nest’s needs, and soldiers are responsible for its defense. When necessary, workers also participate in defensive tasks. One of the termite’s defense mechanisms, which amazed scientists, was recently discovered in June 2012.

Jan Sobotnik, with the Academy of Sciences of the Czech Republic, and Thomas Bourguignon, of Université Libre de Bruxelles at French Guiana, discovered an unseen feature of the termite species Neocapritermes taracua. The workers of this species are, in a sense, enlisted to military duty when they “retire” due to old age and an inability to forage due to weakened mouths. They serve the defense of the nest as something of a chemical weapon specialist. When the colony is under attack, these veterans blow up a droplet-size balloon filled with a type of chemical generated in between segments of their neck and dorsal region.

When worker termites get older, blue crystal chambers, which resemble backpacks, grow on their two shoulder blades on their back. These crystals are a kind of protein called hemocyanin that contains copper, and they join together with saliva when under threat. This fusion causes a chemical reaction. The end product is a sticky liquid, like a gel, that is compressed to expand and then burst. This can fatally injure a predator. The poisonous substance that is dispersed causes rotting upon contact. The chemical formula of this blue crystal substance, along with its reactions, are still unknown.

Researchers from Oregon University (USA) reported that the mouth of an ant is worn down by age. When this occurs, these senior individuals, which used to cut leaves, now take on different jobs, like carrying the leaves. Leaf cutter ants, which are also known as the ranchers of the animal kingdom for their ability to cultivate fungi in their nests, can cut and carry leaves whose weight can be up to 50 times their body weight.

The leaves that are transported to the nest comprise the main ingredient required for the growth of fungi in a suitable environment regulated for the right temperature and humidity. This fungi is ultimately used to feed the colony. This is a fine example of senior members of a community staying active in a new role. And this is not just unique to termites: research shows that members of animal societies adapt to changes in their lives, and continue serving their colonies even if they lose some dexterity.

Our universe seems to be set up this way. As mentioned in the above examples, there is a change of occupation instead of just retirement. Just as there is no termite that stops working, there is no bird that says “I do not want to fly anymore because I am old,” or no tree that says, “I will retire and stop giving fruit because of my old age.” Organisms adapt to new conditions and find new ways to provide for our planet.

Our aging planet will continue rotating and the sun will keep smiling on us with its heat and light until the end of such organism’s lifetimes.

When it comes to humans, continuing with occupation and business as much as they can should be the desired effort. Especially for charity work, no one should mention retirement or leave of a duty, and receding to one’s quarters. Let us renew our intentions now, and review our senior living plans.

It is estimated that our earth was bombarded with life destructing cosmic radiation 700 million years after its creation. We do not know exactly how carbon-centered life came into existence and we can only make assumptions based on clues. As the verse goes, we did not witness the first creation of life (Qur’an 18:51, 43:19). However we can develop various scenarios through traces left by the earlier events. We know that the first traces of life on earth date back to around 4 billion years ago. The molecular basis of material life relies on the facts of quantum world because chemical affinities of biochemical molecules, conservation of catalytic domains/surfaces and formation of three dimensional structures all depend on principles of quantum mechanics. Microscopic pores of clay crystals or oceanic basalt (a type of volcanic rock) are suitable for synthesis of complex organic molecules.

If planet earth did not have plate tectonics, problems would occur with the logistic flow of materials needed to be used for the formation of life. For instance, if carbon stored in carbonated sediments meets water, it dissolves as CO2, and then released into the atmosphere. These tectonic movements constantly generate new materials ready to be oxidized, thus preventing oxygen ratio to reach dangerous levels. The reason Mars has been a dead planet is because all its tectonic movements almost have come to a halt. Plates gain high level of flexibility with the water content of the earth crust. This way, both the gliding of tectonic plates over one another and the continuous flow of inner planetary material towards the surface is enabled.

One of the scenarios regarding where life on earth had started relies on the hot springs at the bottom of the oceans as being the earliest and most suitable places for life. These environments located near the inner crust of the earth are host to micro-organisms since those times. Therefore, the first organisms on earth are most likely to be organisms (hyperthermophiles) living in high temperature waters.

Furthermore, because ribosomes are the protein makers of the cell, when ribosomal RNA’s sequence analyses were compared, it was understood that hyperthermophilic organisms were among the first life forms. Stability of DNA and proteins are at risk when they are over 100 °C, so that is the reason today’s hyperthermophilic organisms are equipped with enzymes that recognize and repair high temperature damage and respond to specific thermal shocks.

This finding constitutes evidence that the earliest signs of life appeared on the critical boundaries of high temperature conditions and thermal degradation. Thus, there is a great possibility for chemotropic microorganisms (methane bacteria) to be considered among the earliest creatures as they utilize inorganic substances in order to generate energy to maintain their lives. Methane bacteria have been supplied with conditions for their survival which is characterized with their ability to produce methane from dissolved hydrogen and CO2 in the water. The fine balance here can be observed in the critical properties of water. If water a) was not separated into hydrogen and oxygen while it passed through hot rock layers, and b) was not returned back to the surface after the tectonic circulation via leakage through micro holes of rocks, and c) did not have the capacity to dissolve both hydrogen and CO2 in sufficient levels, chemotrophic organisms would not be able to have a sustainable life. This is because the supply of required raw materials for energy production is linked to physicochemical properties of water as part of the causation chain. Another important property of water is that it can be transported in carbon nanotubes as this property has critical importance, especially in relation to plant osmosis and cell membrane transport of protons. In the formation of these properties of water (such as the dedication of electron and proton mass value and charges), the phenomena of fine balance during the earlier moments of the universe has a significant role.

How dependant is life on water?

There is no evidence up until today that shows the presence of an organism which can live and reproduce completely without water. The most dangerous factor for a life on land is the dryness of air in lethal levels (Zero humidity ratios). When the air is at 20 °C and with 50% humidity, cells carry 0.1 gr. of water per dry biomass. Cellular metabolic functions come to a halt when water concentrations drop to this level. This is deadly for many plants and animals. However, an unknown percentage of microorganisms and few plant and animal species are equipped with such mechanisms to be able to withstand drought in an ametabolic state for hours or years. Returning back to their ordinary living functions and activities depends on their coming in contact with a humid environment or water. Drought tolerance is very limited, so is the number of tolerant species and their quantities.

Scientists have been conducting extensive research on these organisms and have found that these organisms are equipped with protective proteins, with sugars that do not lose function in dry environment, and with genes uniquely assigned to regulate the syntheses of these proteins and sugars, and that they are so finely incorporated in these organism’s genetic and metabolic programming – these facts are truly amazing and indicative of an all-comprehensive knowledge and willpower constantly operative in the universe. For instance, Trihalose sugars are utilized during drought tolerance response in animals. This type of sugar indeed increases drought toleration in human thrombocytes to some level. It has been proven that the longevity of dried plants depend on the fat content of their cell membrane and particularly the number of double bonds in acyl chains. Without losing vitality, time for seed drying gets shorter as the number of double bonds increase. Also, if cells cannot renew the reduced form of Glutathione as it functions in the removal of oxidation causing agents during both the drought and drying process, programmed cell death is initiated.

Aphelenchus avenae, one of the nematodes (round worms), can regulate expression of genes encoding proteins pertaining to drought resistance according to the presence of water. Nemotadoes living in Antarctica become active with a slight increase in soil humidity. Extreme humid conditions however cause a shorter life span in these animals. Studies exhibit that drought is not a favorable living condition and that life forms increase productivity as they distance themselves from drought. The factors that contribute to famine outside of anthropologic elements can be listed as dry climates and drought intolerance of the human body. Studies regarding drought resistance gene transfer have been going on via plants and animals which can bear such toleration.

The genes that hold the information in their structures in order to provide drought resistance have gained importance in such environmental conditions and can be noticed more frequently. All of these illustrate that major roles have been assigned to water in terms of formation and maintenance of a carbon-centered life on earth. The difference between organisms which have resistance to drought and those who have resistance to dehydration are hidden in the details at the molecular level.

Fine balance in early life forms

We are witnessing a great deal of diversity on earth because every single event that has happened since the beginning of the universe was made suitable for life. Microorganisms living in deep ocean hot springs, in freezing cold regions of Antarctica, in extremely acidic or saline waters are very good examples for this. If human skin was to touch these kinds of acidic waters, it would cause severe burns. Pyrolobus fumarii, a hyperthermophile organism, lives in volcanic pits as hot as 90 to 121 °C and proliferates at 121 °C. In recent years, archaebacteria species which can live in 130 °C heat have been isolated.

Saline water has the property to stay in a liquid state even in -20 °C. Properties of water like heat conduction, heat preservation, solubility, viscosity, surface tension, and cell membrane interactivity should be reinvestigated for temperatures between -15 °C and 130 °C in which life can be observed. One important feature of water is that it retains its fluidity over dirty surfaces and over thin films that form on ice crystals, even in temperatures below freezing point. Physical and chemical properties of water in ultra-cold micrometer thin films are different when compared to normal conditions. There are many microbial organisms living in life-permitting conditions generated on these thin films. Specific organisms have been created for every climate type and location on planet earth. Microorganisms and plants (psychrophilic) living in extreme cold conditions (between -10 °C and -20 °C) are great examples of this phenomenon.

It may be considered as a law operative in nature that organisms living in the same environment from different categories of life are created equipped with common features adapted to that habitat. Such features, motifs and adaptive processes that are repeated and conserved among living things in fact indicate the One and His creative power in unity. The overlap and correspondence of biological features of livings things with their living conditions is an important evidence for the fine balance phenomenon of organisms. The commonality between the polar cod (Boreogadus saida), which is a significant source of trade in the North Sea, and distant fish species such as Dissotichus mawsoni, which live in the cold waters of Antarctica, lies in the fact that they both have the genetic information for the antifreeze feature. This genetic information involves synthesis of an antifreeze protein with a repeating Threonin, Alanine and Proline amino acid motif when expressed as an antifreeze feature. This specific protein present in the blood of both fish is in charge of inhibiting proliferation of ice crystals which therefore prevents fish from freezing.

Molecules that function with water

If one observes the events that are taking place in our nature and universe with an objective lens, the presence of purpose and target centered processes and behaviors (teleological) in each stage are witnessed. Properties of water, particularly the presence of suitable chemical (hydrogen) bonding strength in transcription, proliferation and expression of genetic programs, show the fine balance phenomenon. If the hydrogen bond strength between DNA, RNA strands and of matching nucleotide bases were different, both translation and amplification of these messages coded via DNA and RNA would be impossible. Another striking aspect of the fine balance phenomenon is seen with Serine proteases in charge of protein degradation.

The reason that these enzymes are known as subtilisin in bacteria and trypsin in vertebrates is because of the presence of different amino acid sequences and three dimensional structures in each of these proteins. However, there are three common amino acids that are conserved in the active site of both of these proteins, as if generated by a single hand. These amino acids have vital importance to the function of trypsin and subtilisin, and they only differ in their positions throughout the protein. In Trypsin Histidine, Aspartic acid and Serine is respectively located as the 57th, 32nd and 195th amino acid, but in subtilisin the same aminoacids are respectively located in the 64th, 32nd and 221st positions.

Can the functional choice in the location of these amino acids be considered as coincidental or self-occurring? It is very difficult to convince one’s mind and heart to answer this question in the affirmative.

Hamza Aydin is a professor of biology and freelance writer based in Turkey.

The world may not have ended on December 21, 2012, but that does not mean it won’t end at all. So what will be the force that will disperse this robust system of ours, rendering all forces including gravity obsolete, and forcing the sun and planets out of their orbits?

The universe contains billions of heavenly systems that travel interdependently in a perfect and harmonious fashion. What could be the obvious cause or force that could disrupt this great arrangement, deorbit the stars and planets, and make every other force ineffective including gravity? If we ponder upon the verses of the Holy Qur’an, “When the sun is folded up (and darkened). And when the stars fall (losing their luster)” (At-Takwir, 81:1−2), “And when the heaven is torn away (with all the truths becoming manifest)” (At-Takwir, 81:11) with our current cosmological advances, will Black holes be the cause that will likely destroy the Sun and even devour the light of stars so that they are unable to function?

Black holes are considered to have the potential to cause a universal apocalypse. It seems plausible that with such gravitational power of Black holes, mountains would be casted away, and magma displacement via volcanic eruptions could lead to major earthquakes. There are a couple of recent geologic studies pointing out the possibility that the gravity of the sun and moon play a role in development of earthquakes. The 7-8 meter rise in seas and 35-40 cm rise in land caused by lunar and solar eclipses are considered to be a possible factor among many factors that triggers an earthquake. Earthquakes of 12-15 Richter scale magnitude can occur because of the gravitational force of Black holes. The biggest earthquake ever recorded was of 9.2 magnitude; such that if it happens again, it can lead to a major catastrophe in a very short time.

Let’s not forget that we are residing on a globe filled with fire in its center. Gases that make up the atmosphere are held only with help of planetary gravity. One of the forces that will boil all the waters away and let all the gases escape the planet could be Black hole gravitation. The air in our atmosphere and resulting “air pressure” can be destroyed by Black hole gravity. Oceans would start boiling violently and then might evaporate off the planet. In this case, living things would suffer severe structural damages since all life forms are composed mostly of water (~70%). That is why astronauts wear a special space suit filled with air made up of normal atmospheric pressure when they leave the atmosphere. We should also keep in mind that trillions of heavenly bodies (asteroids, meteors, and comets) located in the two asteroid belts (Orion and Kuiper) may be freed from their gravitational control by the vacuum impact of the Black hole, causing colossal cosmic collisions.

The disruption of gravitational balance

There is a sensitive relationship between the elements of the universe, such as electromagnetic, nuclear forces and an apocalypse may result from a disruption of these.

According to the general relativity theory, the time-space plane can be rolled or wrinkled up like a paper. The gravitational force of black holes can cause the displacement of stars which are interconnected through weak web of attractions. As if a piece of net takes a specific shape when loaded with heavy objects, the web of space-time, also known as the cosmos, could be distorted and even torn apart by black holes with their infinite mass “sitting” in it. This is a characteristic of black holes. A possible explanation for this might be that via elimination of common physical laws, the black hole region could become the gateway to metaphysical dimensions. Cosmos of space and time is described as strong-built, fracture-free in the Qur’an; “You do not see any fault or incongruity in the creation of the all Merciful. Look yet again: can you see any rifts?” (Al-Mulk, 67:3). However, in verses about the apocalypse, cosmic fractures that will occur is constantly repeated; “Day will come, land to be transformed into another, skies to be converted into others” (Ibrahim, 14:48)”On the day when the earth is changed into another earth, and the heavens (also)” (Abraham, 14:48), ”And the sky split asunder, and so, on that day it will be most frail” (Al-Haqqah, 69:16), and “The sky will cleft open thereby” (Al-Muzzammil, 73:18). We can conclude from these verses that new heavens would be created from these “fractures.”

The way that doomsday will actually take place is in the knowledge and control of Our Creator who executes these acts and maintains the order of the universe. Approaches and conclusions made with current physical and cosmic sciences will enable a better understanding of the verses related to doomsday.

The Sun rising in the West and the apocalypse

Can a comet or a planet change the direction of the earth’s rotation by colliding with it? Can the earth change direction and start to rotate from East to West instead of West to East? A catastrophic event like this may cause colossal destruction and end the lives of many organisms. As a matter of fact, a comet impact in recent years was detected to slow down the rotational speed of planet Jupiter.

Venus is a mysterious planet on many levels. For example it rotates in the opposite direction compared to other planets. Sun rises in the West on Jupiter. Dense rock and dust layers of Venusian atmosphere is theorized to be formed as a result of a collision, and because of this collision, it is thought to have started spinning in the opposite direction. A day in Venus is longer than a year. In other words Venus revolves around the Sun faster than it rotates around itself.

Bediuzzaman Said Nursi explains the sun rising in the West rather metaphorically as follows:

“While God knows best, the Qur’an, which is in effect the intellect of the earth, will disappear from its head at the end of time and, as a result, the earth will go mad. With Divine leave, it will collide with another planet and its rotation will be reversed. Through Divine Will, its journey from west to east will be reversed from east to west, and the sun will start to rise in the west. Truly, if the gravity of the Qur’an, which is the firm rope of God that binds the earth to the sun and the ground to the Divine Supreme Throne, is broken, the tether holding the earth will come unfastened. The earth will consequently become dizzy and deranged: on account of the reversal of its usual motion, the sun will rise in the west. Through its collision with another planet, Doomsday will begin at the Divine command.” (The Rays, p. 365)

Whichever way the earth comes to an end, even if the universe is not destroyed by an external destructive event, an apocalypse is foretold as something that will eventually happen with some mind-blowing descriptions in the Qur’an. What science speaks of black holes and other astrophysical possibilities in the universe seems to confirm these descriptions:

When the sun is folded up, and when the stars fall, and when the mountains are set moving. (At-Takwir, 81:1-3)
When heaven is cleft open, and when the stars fall in disorder and are scattered, and when the seas burst forth. (At-Taqwir, 81:1-3)

Factors underlying variable DNA methylation in a human community cohort. L.L. Lam et al. PNAS October 16, 2012 vol. 109

The effect of environment on genes can be very profound. Our surroundings may not directly change our DNA sequence but it can surely dictate how our genes are transcribed. Epigenetics studies heritable changes in gene expression caused by non-genetic mechanisms, i.e. mechanisms other than the changes in the DNA sequence itself. DNA methylation is one of the major epigenetic modifications to regulate the gene expression. The addition of methyl groups on DNA sequence acts like a dimmer on a light bulb switch, which will turn certain genes on or off. A recent study showed that a person’s early life experiences shape their DNA methylation patterns. The research team discovered that childhood poverty (not socioeconomic status as an adult) is highly correlated to distinct methylation marks left on genes. Although children in rich and poor households have identical sets of genes, the degree of adversity or stress at home determines which combinations of those genes are activated or silenced through differential DNA methylation. One can imagine that such epigenetic changes might cause some alterations in the gene expression program of blind people to certain environmental signals or make them even more sensitive. Perhaps such changes could make some people more adaptive to harsher life conditions, hence enhance their survival. These findings suggest that environmental conditions early in life shape our epigenomes permanently thereby influence our life experiences, health and probably many other things that we are not yet aware of.

An alien planet next door

An Earth-mass planet orbiting α Centauri B. X.Dumusque et al. Published online 17 October 2012, Nature

Astronomers have just discovered an earth-size alien planet right next to our solar system. A new earthlike planet, named Alpha Centauri, is just 4.4 light-years away. That’s 40 trillion km away from earth! Although this rocky planet’s mass is similar to Earth’s, it orbits much closer (25 times closer than the Earth) to host star Alpha Centauri B. As a result, a year lasts 3236 days and the surface temperature of the planet reaches around to 1200 °C, which makes the planet incapable of supporting any life form we know. However, solar systems with a rocky world are usually predicted to have multiple planets. One possibility is that that Alpha Centauri A, the bigger sibling of Alpha Centauri B, might host some yet to be discovered unknown planets with more habitable zones. Although this recent discovery has sparked people’s dreams to travel to another star system outside of our planetary system, such an exploration mission unfortunately seems impractical in the near future. Even a cell phone-sized probe that is accelerated to 10% of the speed of light would need to travel non-stop for 40 years to reach the target. So, what is the next best thing to do? Will it be taking photos or dropping probes on the planet’s surface to study a potentially modified atmosphere? It seems like while astronomers work hard on the identification and characterization of this new star system, scientists should focus on developing super-fast propulsion systems, which will perhaps include new concepts like nuclear rockets and antimatter fusion drives.

Bad memories, substitute or suppress

Opposing Mechanisms Support the Voluntary Forgetting of Unwanted Memories
Benolt RG et al., Neuron, Volume 76, Issue 2, 450-460, 18 October 2012

For the nervous system, forgetting a memory is almost as complicated as creating one. A recent study probed the mechanism of how the brain allows us to voluntarily forget unwanted memories. Researchers utilized functional magnetic resonance imaging (fMRI) to examine the brain activity of participants who had learned associations between pairs of words and subsequently attempted to forget these memories by either blocking them out or recalling substitute memories. The fMRI results showed that two separate forgetting strategies looked equally effective yet they seemed to use different neuronal circuits in different parts of the brain. For memory suppression, dorsolateral prefrontal cortex inhibits neural activity in the hippocampus which is a critical region for recalling past memories. On the other hand, memory substitution specifically activates caudal prefrontal cortex and midventrolateral prefrontal cortex that are known to bring specific memories into awareness in the presence of distracting memories. These findings can help us to better understand the mechanisms of memory disorders such as posttraumatic stress disorder, and may ultimately help to develop effective treatments. At a more personal level, this study may direct us to explore how we deal with our unpleasant or unwanted memories. We might be surprised to realize that one approach might be working much better for us than another one. In other words, neuronal wiring in our brain might simply favor one approach over another.

It is possible to ask many more such questions. Astronomer Neil F. Comins, from Maine University, explained in his book, What If the Moon Didn’t Exist, the scenarios humankind would have faced if the Moon hadn’t existed. According to Comins, one of the millions of reasons why Earth is the only planet (known to us) to have life is the delicate balance between the Earth and the Moon. No occurrence in the universe is a coincidence, thus the Moon has been created as a balance factor. This balance is so sensitive that it is possible to say that there would be no life on Earth if it weren’t for the Moon.

The Moon, a sphere that has no atmosphere, and has a surface covered with craters, dust and rocks, is the Earth’s only satellite. The radius of the Moon is about one fourth of that of the Earth’s, its volume is about 1/50 of the Earth’s, and its mass is about 1/81 of the Earth’s. The Moon is around 240,000 miles from the Earth’s center and it takes 29.5 days to complete its orbit around the Earth. Even though we do not know for sure how the Moon came into being, the currently accepted theory asserts that a planet about 10 times lighter than the Earth, which astronomers call “Thiea,” crashed into Earth and a part of that planet broke apart and fell into space. This part (having lost its shape and most of its mass) crashed into Earth again after orbiting the Earth. In this second crash, the metal center of “Theia” fused into the center of the Earth while the outer shell’s light rocks scattered into space. In time, these little rocks fused to form the Moon. At first, the Moon orbited the Earth with a distance of only 14,000 miles, but in time this distance increased into an average of 240,000 miles.

The Moon’s largest effect on Earth is the tide. According to the law of universal gravitation, any two objects in the universe pull each other, and the force of this pull is in direct proportion to the objects’ masses and in inverse proportion to the square of the distance between the objects. The gravitational pull between the Earth and the Moon causes the seas and the oceans on Earth to either rise or subside. This effect is called the tide, which changes between high tide and low tide according to the Moon’s position. One third of all tide effects on Earth are caused by the Sun’s pull and the rest is caused by the Moon’s.

The Moon gets 1.57 inches farther from the Earth every year due to the tide. It is known that the time taken for the Earth to turn around its axis completely (1 day) increases by 0.02 milliseconds every year so that this distancing effect can be countered and the angular momentum of the Earth and the Moon can be sustained. It is also known that the time taken for the Earth to turn around its axis was 8 hours when the Moon was first created, and that it increased to 24 hours since then. If the Moon had not been created, there wouldn’t have been any tide and because of that, one day would still be 8 hours. That would mean that the Earth would be spinning around its axis about 3 times faster than its current speed. A greater spinning speed of a planet might mean stronger winds on its surface. For example, Jupiter and Saturn spin around their axes very fast and have about ten hours in a day. This causes winds with speeds up to 300 miles/hour at the east-west direction on their surfaces. The dust storms that occur in the atmospheres of these planets are caused by these winds and can be seen from the Earth with a telescope.

Without the Moon, the Earth would have spun faster, causing a faster heat exchange among the air, seas and land. This, in turn, would have caused hurricanes in the east-west direction on the face of the Earth with speeds up to 100 miles/hour. Such conditions would have been very inconvenient to all complex life forms including human beings. Even simple tasks like speaking or listening could have been very difficult or even impossible. Since a day would have been eight hours, this would have caused a mismatch between the biological clock of living things – including human beings – and the flow of the day, resulting in biological complications. Without the Moon, the high tide would have been very weak, again causing a very inconvenient environment for sea creatures.

The Moon also has a role in keeping the Earth’s axis at a 23.5 angle. It is known that the seasons result from this and allows the right amount of sunlight to the equator and the poles, creating a climate appropriate for life. Another known effect of the Moon on the Earth is that it reflects the Sun’s light and heats up the Earth by 32.36°F (0.2°C). The Moon also serves as a shield against space rocks, and if it had not been for the Moon many more rocks and meteors would have hit the Earth.

Most of the cosmic rays that come from space are neutralized by the Earth’s magnetic field. Few of these rays reach the Earth and causes chemical reactions. Without the Moon, the core of the Earth would have spun faster along with the Earth itself. With the core of the Earth spinning faster, the magnetic field would have been much stronger. This would have caused huge changes in the atmosphere. Besides, some bacteria and animals that use the magnetic field to find their way (such as sea turtles, salmon, eels, pigeons, and migratory birds) would have been negatively affected. Consequently, many ecosystems, as we know them today, would have been different.

Another significant service of the Moon to our lives is that, like the Sun, it has been used as a calendar throughout human history. Muslims today observe their Ramadan fast according to their hijri calendar which is based on lunar measurement of time.

The Moon is the largest satellite that we know, in proportion to the size of the planet it is attracted by (the Moon’s mass measures 1.23 % of the Earth’s mass). The size of the Moon plays a critical role in the sensitive balance of our ecosystem. When the relationship between the Earth and the Moon is examined carefully, one could easily conclude that the Moon has been created specially for the life on Earth by the One Who “has made the heavens high and set up the balance” with a gentle measure, a great cause and benefit, and was given to the service of humankind.

Notes

1. Neil Comins. What If the Moon Didn’t Exist? Voyages to Earths That Might Have Been, New York: HarperCollins, 1993.
2. “The Sun and the Moon are by an exact calculation” (Quran 55:5).
3. Marcus Chown. “The Planet That Stalked the Earth,” New Scientist, August 14, 2004, pp. 27–30.
4. Paul D. Spudis. “Moon,” World Book Online Reference Center, NASA, 2004.
5. Tony Phillips, “What Neil & Buzz Left on the Moon,” Science, NASA 2004.
6. Richard Ray, “Ocean Tides and the Earth’s Rotation,” IERS, 2001.
7. Comins 1993.
8. Paul J. Henney, www.astronomytoday.com
9. John Gribbin, “A Mysterious Monthly Temperature Cycle,” New Scientist, pp. 18, January 28, 1995.
10. “We have obscured the sign of the night, and We have made the sign of the day illuminating to see, that you may seek bounty from your Lord and that you may know the computation of (time) the years and reckoning…” (Isra 17:12). This verse has been interpreted as to refer to the moon and the sun. “… He has made the night for repose, and the sun and the moon a means for reckoning (the divisions of time)…” (An’am 6:96) also refers to this fact. See Ali Unal, The Qur’an with Annotated Interpretation in Modern English, Tughra Books, 2008, p. 294, 570–71.
11. Quran 55:7.