How Science Works -- Science is an Elf -- Origin of the Theory of Evolution: Time and Change -- The Origin of the Earth and of Species of Animals and Plants as Seen Before the Enlightenment -- The Seashells on the Mountaintop -- Were Kangaroos on Noah's Ark? -- Aristotle's and Linnaeus' Classifications of Living Creatures -- Darwin's World-Species, Varieties, And the Age of the Earth. Evidences of Glaciation -- The Voyage of The Beagle -- Is the Earth Old Enough for Evolution? -- Origin of the Theory of Evolution: Social Aspects -- Evaluating Data -- The Industrial Revolution, Population Potential, Malthus, Social Pressure, and Competition -- Natural Selection: the Second Half of Darwin's Hypothesis -- Darwin's Hypothesis -- The Crisis in Evolution -- The Molecular Basis of Evolutionary Theory -- The chemical Basis of Evolution -- The stuff of Inheritance: DNA, RNA, and Mutations -- The Genetic Code -- The History of the Earth and the Origin of Life -- The Story of Our Planet -- The Appearance of Oxygen -- The Conquest of Land-Every Criterion for the Classification of the Major Groups of Animals and Plants Refers to Adaptations for Life on Land -- The Great Ages of Our Planet -- Return to Water and to Land -- Evidence for Extinctions-why do we get them? -- The Violence of the Earth: Rainshadows and Volcanoes -- The Origin of Species -- Competition Among Species -- Sexual Selection -- Coevolution -- The Importance of Disease -- The Aids Murder Mystery-What Constitutes Proof? -- The Evolution of Humans -- The Evolution of Humans -- When did Humans Acquire a Soul? -- The Impact of Evolutionary Theory: The Eugenics Society and the I.Q.Test -- Evaluating Population Measurements: Bell Curves, Statistics, and Probability -- Conclusions-where do we go from here?. Scientists have great passion. What could be more exhilarating than to go to work every day feeling as if you were once again a nine-year-old called up to he stage to help the magician with his trick? To be a researcher is to always be in the position of having the chance to see how the trick works. No wonder that many researchers feel that each new day is the most exciting day to be a scientist. It therefore is not surprising that scientists have such trouble communicating with non-scientists. It is difficult for the scientist to understand a life not focused on the desire to understand. But the differences are not that. Everyone wants to understand; that is one of the factors that make us human. The difference is more that scientists limit their definition of comprehension to specific rules of logic and evidence. These rules apply and are used in everyday life, but often with less rigor or restrictions on evidence.