Only 0.15 % of the energy that reaches the earth is used by the plants and the algae as a source of energy for photosynthesis. The energy that is stored in the form of chemical energy within the photosynthetic plants establishes the source of energy for the food that is consumed by the creation. The past creation, as a result of the physical-chemical processes, was fossilized and solar power has been stored in the form of fossil fuels (oil, coal, natural gas).

Energy consumption and the environment

Energy consumption is viable for every form of work; the waste is what remains in the environment. This waste does not pose a problem as long as they do not damage the sensitive ecologic balance. However, rapid industrialization and urbanization, which lead to excessive amounts of energy consumption, result in environmental problems. Since industrialization-urbanization is directly related to energy consumption – particularly with fossil fuels – industrialized countries are more vulnerable to experiencing environmental problems. In today’s world, it is climatic change – a product of global warming – among these problems that is of the greatest global importance.

The increase in the proportion of carbon dioxide, a greenhouse gas, in the atmosphere is the main factor for global warming. This increase is directly related to the consumption of fossil fuels. The rays of the sun, which are reflected from the earth, are trapped by carbon dioxide gases (chlorofluorocarbon, nitrous oxide and other greenhouse gases, such as water vapor) in the atmosphere, and they can not return to space. This, in turn leads to the atmosphere heating up (the greenhouse effect), eventually leading to an increase in heat throughout the world.

The main reason for the increase of carbon dioxide in the atmosphere is the consumption of fossil fuels (77%) and the decrease in the number of forests (23%). Coal gas is normally the last product of the anaerobic processes in nature. In recent years human intervention played the main role in this abnormal increase in gases. Playing an important part in this process is the expansion in rice fields (38%) in order to feed the increasing population, natural gas extraction and its transfer (16%), an increase in the number of cattle (14%), coal mining (12%), and the oxidation of produced biomass (6%). Chlorofluorocarbon is included in industrial products. As for the nitrous oxides, they are the by-products of reactions in the nitrogen cycle in nature. In recent years, as a result of the increase in the use of the nitrogenous manures (85%), forest fires and other fires (11%), and the oxidation of the produced biomass (7%) there has been a rise in nitrous oxide. Consequently, the rapid increase in greenhouse gases in the last years has lead to a 0.5°C increase in the average heat of the earth.

If the greenhouse gases continue to be accumulated at this speed, then by 2100 the average heat of the earth will record an increase of 2–4°C compared to the period before industrialization. Eventually, there will be a greater melting of the glaciers at the poles, which will lead to 0.5–1.5 % increase in sea level. Thus, residential areas by the seaside, agricultural areas, wetlands and industrialized areas will face the danger of being flooded. Moreover, the risks of climatic changes and desertification will become much more severe.

Some countries are investigating how to calculate the probable effects of a decline in water, food and energy resources and what precautions need to be taken accordingly as a result of global warming. In this sense, the problem was clearly indicated during the summit meetings in Vienna (1985), Rio (1982), and Kyoto (1997), however, they have not been sufficient to provide a solution.

Another important problem arising from the overuse of fossil fuels is the damage to the environment caused by air pollution and acid rain. During the consumption of fossil fuels, CO2, NOx, and SOx are emitted into the atmosphere and these, combining with water vapor, lead to the formation of carbonic acid (H2CO3), nitric acid (HNO3) and sulfuric acid (H2SO4). While normally the pH of rain water is 5.5–6, with these acids it falls down to 3.5–4. This and the resultant dissolution of the metals in the water pose a threat for both the land and the aquatic ecosystems (e.g. a decline in fish species in many lakes) and impair the ecologic balance.

The impact of alternative and renewable energy on the environment

The negative impact of fossil fuels on the environment and the decline in their reserves has accelerated the search for new energy resources. Even though nuclear energy is not a renewable resource, today it has come to be regarded as an alternative energy resource all around the world. Hydrogen, too, is another growing alternative resource. Geothermal energy is also a renewable energy resource, yet it is mostly restricted to the region where it originates.

With current technology, it costs us more to use solar energy rather than to extract fossil fuels. Moreover, there is a great need for the development of new technology that is aimed at producing wind, hydroelectric, bio-energy, tidal and wave energy in the most efficient way at the lowest cost.

Defeated by their ambitions, human beings, particularly in the last century, have destroyed the world and the environment that has been entrusted to them. Since the global impact and the cost of this process only emerged recently, it was too late before human beings realized that they needed to shift from energy systems based on fossil fuels. All the worries and concerns that have surfaced today is not because we have finally realized that the earth has been entrusted to human beings, but simply because the future seems to be promising nothing but destruction. Thus, the real solution to the problems is not related to acting to find a solution to the problems, but rather in being in compliance with the measures of the actual Owner of the world and the universe and avoiding form all types of extremism.

References

• Spiro Thomas G. and Stigliani William M. 1996. Chemistry of the Environment, Prentice Hall, Upper Saddle River, New Jersey, USA.
• Godish Thad. 1997. Air Quality, CRC Lewis Publishers, Boca Raton, New York.
• World Energy Outlook. 2004. International Energy Agency.

Our current source of energy is mostly fossil fuels such as oil, coal, and natural gas. Fossil fuels are nonrenewable. In other words, they are finite resources and they will diminish significantly in future; hence, they will be very expensive to use and environmentally harmful to recover. In contrast, solar, wind, biomass, hydrogen, geothermal, ocean, and hydro power are renewable energy resources, that is, they are constantly replenished and will not run out. Renewable energy is not only important for our energy needs but also has significant advantages over fossil-based energy resources in the protection of the environment. Besides, the environmental aspect of renewable energy also has a religious dimension, since preservation of the earth and its inhabitants is regarded as a duty for humankind.

Among these energy resources, solar energy is generally used for electricity generation or for hot water heating. It also finds uses in solar cooling, and in direct heating and lighting of buildings and homes. Solar panels are made of photovoltaic (PV) cells. The term “photovoltaic” means “converting light into electricity.” Solar energy technology has been around since the late nineteenth century. Yet, its share in energy production constitutes a very small fraction (less than 0.1%) of production around the world. This stems from the higher cost of electricity generation with solar panels in comparison to use of fossil fuels. In the US, electricity generated from PV cells costs $0.30 to $0.40 per kilowatt-hour while consumers pay only $0.10 per kilowatt-hour to the electric utility companies. Nonetheless, with recent advances in this technology, it will be possible in the near future to decrease the cost and make this technology viable for our energy needs as we face shrinkage in fossil fuels around the globe.

One of the factors that increases cost is the low power-conversion efficiency of current PV cells. The PV cells used in the market are mostly fabricated from silicon crystals and these cells show a power conversion efficiency of 15%. That means, 85% of photons go to waste when harvesting energy from sunlight. In fact, the theoretical limit of light harvesting in silicon-based solar panels is only 31% because of the low band gap of silicon, which only partially absorbs sunlight to form charge carriers in the device. To solve this problem, scientists have utilized three different crystals in a single PV cell to absorb more sunlight, and these studies have yielded a device efficiency of 37%. Just recently, scientists at the National Renewable Energy Laboratory (Golden, Colorado) and Boeing-Spectrolab have achieved a world-record conversion efficiency of 41% by using the same idea, establishing a new milestone in sunlight-to-electricity performance. Although such studies are very promising in this field, when it comes to production cost, these inorganic PV cells are still an expensive technology for power generation compared to fossil fuels.

Organic photovoltaics

An alternative solution to decrease the cost is to use devices with lower power efficiency but a very low cost of production. Organic-based PV materials offer such an alternative with easy and fast production techniques such as solution processing and printing. Conjugated polymers (polymers with alternating single and double bonds in their polymeric backbone) are especially important in this regard, since they exhibit semiconductor properties. The best organic PV cell efficiencies reported in recent years are around 5%. This number must double in order for the cells to be used in solar panels, assuming that the cell displays high photostability and conductivity. Many research groups are now focusing on organic-based solar systems as an alternative technology to their inorganic counterpart.

Although we are all familiar with solar energy, most of us do not know how electricity is produced from sunlight. To show the mechanism for photovoltaic activity, one first should look into an anatomy of a typical organic PV cell which is shown in Figure 1. This cell is based on an organic PV cell. The organic layer is sandwiched in between two electrodes where light absorption and charge separation occurs. Typically, glass is used for support but plastic materials can also be used as alternatives. The anode is usually indium tin oxide (ITO) and the cathode can be aluminum, calcium, gold, or magnesium. The electrodes must be semi-transparent to facilitate light absorption. Specifically designed conjugated polymers are utilized for sunlight absorption, where the wavelength range of absorbed light may vary from ultraviolet-visible to near infrared depending on the material used in the device. The efficiency of the device is determined by the extent of light absorption, efficiency of charge separation, and charge diffusion to the electrodes. The morphology of the organic layer has been found to be very important for device characteristics and cell efficiency. In an organic PV, an electron is promoted from the highest occupied molecular orbital (HOMO) level to the lowest unoccupied molecular orbital (LUMO) level upon light absorption (Figure 2). This transition results in an electron-hole pair which is then separated by the electric field formed by the different ionization energy of electrodes (Φ). Therefore, the electron moves to the cathode and the hole moves to the opposite side. This process causes charge flow between the electrodes and hence electricity is generated in the process.

Despite all the improvements in organic PV technology, current cell efficiencies are still low for electricity generation. The stability of organic PV materials must be improved as most of them are prone to degradation by oxygen and humidity in the air. The large-scale production of organic solar panels is possible, and yet the feasibility of current methods has not been investigated extensively so far.

Solar energy is a clean, renewable resource of energy and is projected to have significant role in the energy market in near future. Funding in the field of solar energy has been increasing in recent years due to the increasing need for energy and the likely reduction of fossil fuels towards the end of this century. Yet, our research efforts are still not sufficient for the advancement of this technology.

Importance of renewable energy for the environment: an Islamic perspective

Solar energy, like other renewable energy resources, is environmentally friendly. Its use should be promoted, as fossil fuels play a dominant role in the increase in greenhouse gases, which are believed to be responsible for the increased rate of global warming and hence climate change. Global warming may cause rises in sea level and changes in the amount and pattern of precipitation. These changes may in turn increase the frequency and intensity of extreme weather events, such as floods, droughts, heat waves, hurricanes, and tornados. Other consequences may include higher or lower agricultural yields, glacial retreat, reduced summer stream flows, and species extinctions. Warming is expected to affect the number and magnitude of the events mentioned above; however, it is difficult to connect particular occurrences to global warming.

In any case, focusing on renewable energy and energy-efficient technologies is one of the best options to secure the future of our planet and all existing forms of life on it. Our effort should not only be due to the expected shortage of fossil fuels in future. Rather, it must be seen as a duty and moral act to save the environment since use of renewable energy resources has little or no negative impact on nature. Religious awareness and guidance in this area is necessary so that each individual may take active part in the protection and development of the environment. Much environmental degradation is due to our ignorance of what our Creator requires of us. People should be educated to realize that the conservation of the environment is a religious duty demanded by God. This fact is expressed in Qur’an in a number of places such as, “Do good, even as God has done you good, and do not pursue corruption in the earth. Verily God does not love corrupters” (Qasas 28:77), “And do not follow the bidding of the excessive, who cause corruption in the earth and do not work good” (Shu’ara 26:151–152), “And do not cause corruption in the earth, when it has been set in order” (A’raf 7:56). Any deliberate damage to the natural environment and its resources is a kind of corruption which is forbidden by Islam.

As Muslims, we should protect and preserve the environment because by doing so we protect the creatures which pray to God and praise Him. Although we do not know how they praise God, the Qur’an clearly points this out: “The seven heavens and the earth, and all beings therein, declare His glory: There is not a thing but celebrates His praise, and yet you understand not how they declare His Glory!” (Isra 17:44). Islam is established on the concept of good (khayr). Since it is scientifically proven that protecting the environment is of great significance for all animals and plants on earth, Muslims should see it as khayr. In the last two verses of chapter Zalzalah (99:7–8), God says, “And whoever does good an atom’s weight will see it then. And whoever does ill an atom’s weight will see it then.”

Protecting God’s creatures and the environment is a duty of humankind because human beings are the “agents” of God on earth. This task cannot be performed by other creatures. Therefore, as the Muslim community we should all commit ourselves to the preservation and to the protection of the environment. Surely, investing in and promoting improvement of the technologies based on renewable energy is one way to go.

References

• http://www.nrel.gov/learning/re_basics.html
• http://www.islamonline.net
• http://lfw.pennnet.com/Articles/Article_Display.cfm?Section=ARTCL&ARTICLE_ID=257239&VERSION_NUM=3&p=12 (PHOTOVOLTAICS: Research targets more-efficient photovoltaics)
• http://lucy.mrs.org/publications/jmr/jmra/2005/dec/0407.html (Organic and nano-structured composite photovoltaics: An overview)
• http://www.orgchem.science.ru.nl/molmat/mm-web/education/caput-college/SolEnergMatCells-2004-83-125.pdf (A brief history of the development of organic and polymeric photovoltaics)
• http://en.wikipedia.org/wiki/Global_warming
• http://www.islamset.com/env/index.html

Denton, an Australian doctor and scientist, distinguishes a special (or micro) theory of evolution from the general theory. The former would claim only that closely related species can (and did in the past) evolve from others. But the general theory (the one that is widely accepted) claims to explain the origin and current diversity of all species as purely random mutations accompanied by natural selection over a very long period of time. While Denton accepts the special (micro) theory, he demonstrates so many flaws in the general theory that it must be rejected outright: its claims cannot be softened or modified in any way that could rescue the theory.

Chapter I traces the dramatic transformation of Darwin’s stance from a ‘fundamentalist’ acceptance of the Bible’s account of creation to outright rejection. Known facts about the geological age of the earth (the Bible implies 6000 years), fossil evidence of extinct species (Genesis states that all species were rescued from the flood), might justify a rejection of a literal reading of the Bible. But they do not justify a rejection of the concept of conscious design in the creation (implying a Creator). Yet, as Chapter 2 shows, this is just the position Darwin (and his followers) take: it is of the essential core of Darwin’s theory that natural selection is a blind process: ‘Darwin himself clearly stated that the mechanism responsible for … genetic variations [must] be entirely blind to the adaptive needs and requirements of the organism. Evolution by natural selection is therefore, in essence, strictly analogous to problem solving by trial and error, and it leads to the immense claim that all the design in the biosphere is ultimately the fortuitous outcome of entirely blind random processes – a giant lottery.’ This idea is frequently reflected in populist remarks like Carl Sagan’s: ‘given enough time, chance will work miracles’. But as anyone familiar with the relevant mathematics knows, ‘time in itself tells us nothing of the probability of achieving any sort of goal unless the complexity of the search can be qualified’. (Denton shows some of this complexity in Chapter 13, ‘Beyond the reach of chance’.) The universe simply isn’t old enough for even life, let alone life in all its diversity, to have arisen by chance.

Chapter 3 describes how Darwin’s theory turned into a general dogma largely because of the unacceptability as scientific theory of the alternative (conscious design implying a Creator). Yet, if stripped of the philosophical and metaphysical pretensions it so quickly assumed, the theory of evolution could be respectable as a ‘partial truth’. Denton explains in Chapter 4 that there is strong evidence (supporting the restricted claims of the special theory) for closely related animals or plants evolving from each other and forming distinct ‘species’, the term ‘species’ being understood as ‘a reproductively isolated population of organisms’.

According to Denton: ‘There are only two sorts of evidence for evolution which do not depend on actual observation of the process: finding a sequence of inter-grading forms leading unambiguously from one to another; or reconstructing them hypothetically by providing an entirely plausible genealogy including all the intermediate forms and thoroughly convincing explanation of how each stage of transformation came about.’ Example cases for the first sort of evidence are: the peppered moth, two species of European gull, and the droshopila species of Hawaii. Examples for the second sort of evidence include Mengels work on wood warblers of North America on Hawaiian honey-creepers by Amadon, and on small lizards of the Caribbean islands by Gorman and Atkins. How-ever, as Denton emphasizes, such evidence for special (micro) evolution in no way justifies the general theory. ‘However attractive the extrapolation, it does not necessarily follow that, because a certain degree of evolution has been shown to occur, therefore any degree is possible. There is obviously an enormous difference between the evolution of a colour change in a moth’s wing and the evolution of an organ like the human brain, and the differences among the fruit flies of Hawaii, for example, are utterly trivial compared with the differences between a mouse and an elephant, or an octopus and a bee.’

Denton gives good analogies and illustrative examples to argue the general principle that: ‘while sentences, machines and other sorts of complex systems can undergo a certain degree of gradual functional change, there is invariably a limit beyond which the system cannot undergo further gradual change. To cross as it were from one ‘type’ of system to another necessitates a relatively massive reorganization involving the redesign or respecification of all or almost all of the interacting component subsystems. Systems can undergo gradual micro-evolution through a succession of minor changes in their component structures but macro-evolution invariably involves a sudden ‘saltational’ change [i.e. non-gradual change by ‘leaps’]. Clearly, in all such cases, the extrapolation from micro- to macro-evolutionary change does not hold.’ Gradual random processes are incapable of producing ‘simultaneous highly specific correlated changes throughout [an] entire system’ which is precisely what they must be capable of if macro evolution is to work. (This argument is further elaborated in Chapter 13.)

Chapters 5 and 6 describe the ‘typological perception of nature which sees (and classifies) organisms as distinct groups separated by non-trivial, large gaps. There is abundant evidence for this approach and historically classification schemes were based on it. However, following widespread acceptance of the general theory of evolution, some felt the need to construct literally tree-like diagrams – many branches from a single trunk and root. Inevitably, such diagrams had many blanks, many wholly conjectural ‘branches’ needed to link known species through unknown transitionary species to alleged ancestors.

Chapter 7 discusses homology which, once thought to provide supportive evidence for evolution, turns out to be evidence destructive of the theory. 1-lomologous organs cannot be traced back to embryological development and there exist homologous limbs which, according to the theory, must have evolved from very different parts of the embryo. In short, homology does not imply common ancestry.

The subject of Chapter 8 is the key issue of fossil evidence. Darwin was expecting paleontological explorations to uncover the crucial missing ‘links’ predicted (and required) by his theory. However, as the evidence from fossil records has grown, so too has the untenability of Darwin’s theory.

To begin with, we need to know that fossils are a record only of skeletal remains: 99% of any organ ism is soft tissue which is not preserved in fossils. The coelacanth (a favourite with evolutionists) had been presented as a ‘link’ between fish and amphibians. Yet, its skeleton is identical to that preserved in aneien fossils which are as far from having been amphibians as are any other fish, The lesson is that conclusions based on skeleton forms alone do not count for much. Insects preserved in amber from hundreds of millions years ago, identical to modern insects, provide further examples of ‘living fossils’ which somehow evaded evolution.

Mother fossil record favourite with evolutionists is the horse series. Denton writes: ‘The difference between Fohippus and the modem horse is relatively trivial, yet the two forms are separated by sixty million years and at least ten genera and a great number of species. The horse series therefore tends to emphasize just how vast must have been the number of genera and species if all the diverse forms of life on earth had really evolved in the gradual way that Darwinian evolution implies. If the horse series is anything to go by, their numbers must have been indeed the infinitude’ that Darwin imagined. If ten genera separate Bohippus from the modern horse then think of the uncountable myriads there must have been linking such diverse forms as land mammals and whales or molluscs and arthropods. Yet all these myriads of life forms have vanished mysteriously, without leaving so much as a trace of their existence in the fossil record.’

The appeal by evolutionists to the incompleteness of the fossil record as an excuse for clinging to their theory might he worth attending to if the gaps, the incompleteness, were unsystematic or random. But the facts are otherwise: ‘The fundamental problem in explaining the gaps in … is their systematic character – the fact that there are fewer transitional species between the major divisions than between the minor. Between Eohippus and the modern horse(a minor division) we have dozens of transitional species, while between a primitive land mammal and a whale (a major division) we have none. And this rule applies universally throughout the living kingdom to all types of organisms, both those that are poor candidates for fossilization such as insects and those which are ideal, like molluscs. If the gaps really were lhe result of an insufficient search, or the result of the imperfection of the record, then we should expect to find more transitional forms between mouse and whale than between dog and cat.’

The hard evidence should make any objective inquirer ask, not whether we may one day fill the gaps in our record, hut whether gradual evolution ever occurred at all: ‘If the gaps cannot he adequately explained by appealing either to an insufficient search or the imperfection of the record, then this leaves a more or less saltational model of evolution as the only explanation of the gaps.’

In Chapter 9, Denton begins to draw the argument towards the conclusion that: Ultimately there is… absolutely no reason why functional organic systems should form the continuum that evolution by natural selection demands. In the world of physics and chemistry many phenomena are discontinuous. One cannot gradually convert one molecular species into another, neither can one convert gradually one type of atom into another. Between such entities there are jumps. Might not functional organic systems be similarly separated by discontinuities?’ He goes on: ‘It is possible to allude to a number of species and groups such as Archaeopteryx, or the rhipidistian fish, which appear to be to some extent intermediate. But even if such were intermediate to some degree, there is no evidence that they are any more intermediate than groups such as the living lung-fish or monotremes which… are not only tremendously isolated from their nearest cousins, hut which have individual organ systems that are not strictly transitional at all.’

The frustration at the failure to find intermediate forms and the difficulty of conceiving of gradual functional transitions led some scientists to an alternative to gradualism, namely ‘the concept of evolution by saltation, the idea that new organs and types emerge suddenly following some sort of massive macro-mutation.’ Advocates of the idea include the popular contemporary writer Stephen Jay Gould and his predecessor Goldschmidt who introduced the notion of the ‘hopethl monster’ in his the Material Basis of Evolution (1940) as a ‘means of getting from one type to another suddenly in one jump’.

The possibility of such a ‘hopeful monster’ had been likened to a ‘miracle’ by Darwin. The great majority of biologists have followed him in that judgement ever since. So-called freaks of nature do, of course, occur but they have little chance of reproductive survival given that they are horn into an environment where the non-freaks (the normal) survive to reproduce. Denton sums up by saying that: While it might he theoretically possible to avoid the impasse of gradualism by opting for saltation it seems unlikely that purely random processes would ever throw together suddenly adaptations like a feather or the avian lung or the amniotic egg.’

In Chapter 10, the process of DNA replication and protein synthesis is explained for readers unfamiliar with the subject. Equivalents of concepts like ‘universal Turing machine’ and ‘fault tolerant computing’ can be observed in perfectly economical design in the world of molecular genetics.

‘The Enigma of Life’s Origin’, the title of Chapter Il indicates the enormous conceptual and empirical difficulties evolution theory has faced in yet another once-promising area. It was hoped that as the nature of living organisms was more fully understood, the gap between them and inanimate forms would he narrowed. Exactly the opposite happened. The gap that separates the simplest living systems from inanimate systems seems unbridgeable: there is not a hint in inanimate systems of the DNA, messenger RNA, and the protein synthesis mechanism (implying self-replication), found in living forms.

Attempts to explain the origin of life through evolutionary means come up against two other major hurdles. The first is the so-called ‘oxygen-ultraviolet conundrum’. One has to assume that there was no oxygen in the early atmosphere because otherwise any organic compounds would rapidly oxidize. However, this assumption implies that there was no ozone to shield these compounds from deadly doses of solar radiation. In other words, this is a ‘catch 22: If we have oxygen we have no organic compounds, hut if we don’t have oxygen we have none either.’ The second hurdle is the shortage of time for the first life forms to evolve: ‘An Australian group reported the remains of a simple type of algae in rocks at least 3.5 billion years old… So life had to form between 3.9 and 3.5 billion years ago. Just a few hundred million years from nothing to organic compounds to the whole DNA, M-RNA, protein system.’

These and other apparently insoluble difficulties led the Nobel-prize winning scientist Crick to comment:

‘An honest man, armed with all the knowledge available to us now, could only state that in some sense, the origin of life appears at the moment to he almost a miracle, so many are the conditions which would have had to have been satisfied to get it going.’ The problem of the origin of life is an example of what Denton calls ‘the universal principle that complex systems cannot be approached gradually through functional intermediates because of the necessity of perfect co-adaptation of their components as pre-condition of function.’ Crick is also famous for running away from the problem by suggesting that life must have originated somewhere outside the galaxies known to us and been cast down amid cosmic dust as a ‘seed’ – his so-called panspermia’ theory.

The subject of Chapter 12 is the modern molecular biological techniques which have provided biologists with an entirely new way of comparing organisms at a biochemical level (as opposed to the classical anatomical comparisons). Again, the comparisons established that: ‘the pattern of diversity at a molecular level conforms to a highly ordered hierarchic system. Each class at a molecular level is unique, isolated and unlinked by intermediates. Thus molecules, like fossils, have failed to provide the elusive intermediates so long sought by evolutionary biology.’

The gaps in the ‘chain of being’ are seen at both empirical and theoretical level: wherever we find significant empirical discontinuities in nature we invariably face great, if not insurmountable, conceptual problems in envisaging how the gaps could have been bridged in terms of gradual random processes. We saw this in the fossil record, we saw it in the ease of the feather, in the case of the avian lung, and in the case of the wing of the hat. We saw it again in the ease of the origin of life and we see it here in this new area of comparative biochemistry.’

In Chapter 13 (‘Beyond the Reach of Chance’) Denton illustrates the impossibility of reaching functional complex systems via blind random processes.

In Chapter 14, we imagine ourselves in a cell magnified a thousand million times and try to grasp the wonderful reality of life. What we see is a system much more complex and perfect than any human artefact built so far. The elaborate Soviet lunar exploratory machine, the Lunakod, which moved on articulated legs, highlights by comparison the sheer ease of solutions provided in nature for such problems as self-location, stability and locomotion. The amazing storage capacity and efficiency (size and energy economy) of biological information storage and retrieval is another striking example of the ease of nature and the hardship’ humans face to match it even crudely by artifice.

Denton comments: ‘According to Paley, we would never infer in the case of a machine, such as a watch, that its design was due to natural processes such as the wind and rain; rather, we would be obliged to postulate a watch-maker. Living things are similar to machines, exhibiting the same sort of adaptive complexity and we must, therefore, infer by analogy that their adaptive complexity is also the result of intelligent activity.’ And he adds: ‘The conclusion may have religious implication but it does not depend on religious presuppositions.’

Chapter 15 (‘Priority of Paradigm’) gives Denton’s explanation of why the theory of evolution has been so pervasive in our age despite overwhelming contrary evidence.

It is a modern example of a scientific community defending a theory just as tong as ii holds sufficient intrinsic appeal.’ He likens it to the defence by medieval astronomers of the Ptolemaic theory of the heavens, and by the eighteenth-century chemists of the phlogiston theory of combustion.

There is not space here to argue at sufficient length against the widely held stance of modern scientists that the concept of a Creator-God is of no relevance to a properly scientific understanding of how the natural world is or how it operates, that, in brief, it cannot he a part of any scientific explanation or theory. We must insist, however, that scientific knowledge cannot exist (any more than its dominant theories can com -about) in some sort of vacuum, isolated from the complex of human knowledge, attitudes and relationships. The social implications of the ‘central claim of Darwinian theory that humanity was not born by the intentions of a Deity hut by a completely mindless trial and error selection of random molecular patterns…’ have been, in general, very had. A theory so certainly false should never have imprisoned scientific imagination for as tong as it has. Ii could not have done so if the aspiration to scientific knowledge had been tutored in the humility that comes with a serious, religious consideration of our status as creatures and servants of God. Only a religious perspective teaches that all human curiosity – its perceptive faculties, its intelligence and the instruments it devises to extend its powers – exists as the gift of the One All-Merciful God who created us and the intelligibility of the world so that we might draw nearer to Him. At least in the field of biology, the alternative to believing in a Creator did not, as is claimed, offer freedom from dogmatism: the lasting value of Denton’s hook is to have demonstrated that reality with clear argument and a large body of hard evidence.