The following post is by Donald Prothero, author of Evolution: What the Fossils Say and Why It Matters. You can also read his earlier post, Evolution: The Fossils Say Yes.
As we mark the bicentennial of Charles Darwin’s birth on February 12, and the sesquicentennial of the publication of On the Origin of Species in November 2009, the world also reflects on the beginning of a scientific revolution that profoundly changed not only biology, but also the way we view ourselves and think about our place in nature. Evolutionary theory has come a long way since 1859, developing into a robust science that beautifully explains nature. The fact that life evolves has not been controversial in scientific circles since Darwin’s death in 1882. It has been demonstrated again and again by amazing evidence from the fossil record (see my Evolution: What the Fossils Say and Why It Matters [New York: Columbia University Press, 2007]). Not only do we have irrefutable proof from fossils that organisms have evolved over millennia, but we can watch evolution in action at many shorter timescales, from the viruses and bacteria that evolve and trigger a new cold and flu season each year; to the pests that evolve resistance to every insecticide we develop, threatening our crop production; to other examples of plants and animals that evolve over years or decades, painstakingly documented by field biologists who work under harsh conditions with little reward.
Evolutionary biology has brought us enormous practical benefits, from deciphering the nature of infection, disease, and pesticide resistance; to better appreciating our peculiar anatomy (see Neil Shubin, Your Inner Fish [New York: Vintage, 2008]); to determining the likelihood of a cross-species organ transplant being rejected. More important, the study of evolution is the key to understanding all of nature. It is the central thread that connects all the branches of biology: genetics, embryology, biogeography, systematics, and behavior, among many other fields. As the great geneticist Theodosius Dobzhansky wrote in 1973, “Nothing in biology makes sense except in the light of evolution.”
Although there is no dispute in the scientific research community that evolution occurs and has occurred, the United States finds itself in the peculiar situation of virtual scientific illiteracy. Poll after poll shows that most Americans are appallingly ignorant when it comes to basic science. We always rank at the bottom of the list, with countries like Turkey and Croatia, while the top of the list is dominated by western European nations plus Iceland, Canada, and Japan. What do all these scientifically literate countries have in common? Science is taught in their schools without interference from meddlesome religious minorities. In particular, they have no significant creationist movements to torment school boards or influence politicians. Only the United States can claim the dubious distinction of having the best scientific labs in the world and most of the world’s Nobel Prize winners in science, along with a population that is as scientifically backward as that of a third world country. Now that many blue-collar and white-collar jobs have migrated overseas, what will happen to our country if one of our few remaining advantages—supremacy in scientific research—is destroyed by Luddites who fear science because it tells them what they don’t want to hear?
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