One of the more crazy anti-science groups are the evolution deniers, sometimes called “creationists.” The body of science that constitutes evidence for evolution is literally mountainous, making up over a million peer-reviewed studies and books that explain what we have observed in current living organisms and the fossil record. Based on this nearly irrefutable evidence, over 99.9% of scientists in the natural sciences (geology, biology, physics, chemistry and many others) accept that evolution is a scientific fact (pdf, see page 8). If science was a democracy, evolution would win in a landslide of epic proportions.
The scientific theory of evolution simply states that there is a change in inherited characteristics of a biological population, over time and generations, through the process of natural selection or genetic drift. Setting aside the misunderstanding, by intention or ignorance, by creationists about what constitutes a scientific theory, evolution is a scientific fact, about as solid as the fact that the earth revolves around the sun or that gravity causes objects to fall to the earth.
There is no genuine scientific debate about evolution, although there is continuing discussion about all of the possible mechanisms that drive evolution beyond natural selection and genetic drift. These discussions are based on the observations and evidence that evolution lead to the diversity of organisms we see today, arising from a common ancestor from about 3.8 billion years ago.
Despite the ongoing scientific discussion regarding other mechanisms for evolution (which are all scientifically based, and none that include magical actions of mythical supernatural beings), the matter of evolution is settled. There are no disputes, among scientists, about the fact that evolution commenced when the first living organisms appeared over 3.8 billion years. None. Other than literature published in self-serving creationist journals, it is impossible to find a peer-reviewed article that disputes the fact of evolution published in any real scientific journal over the past 25 years, if not past 50 years.
Despite the scientific facts, American politicians, almost exclusively conservative Republicans, continue to push legislation to force public school districts to teach creationism. Though this legislation is rarely successful, Louisiana and Tennessee have recently passed antievolution bills. The right wing politicians, mostly in southern US states, are convinced that evolution and creationism are equivalent, and they conflate a ridiculous political and social argument with a scientific debate. Read More »Americans are ignorant fools about evolution–Part 2