Dinosaurs: The Natural History Museum's Dino Directory. Reviews for Walking With Cavemen: DVD: Peter Elliott (II),Alec Baldwin,Anthony Taylor,Ruth Dawes,Badria Timimi,Alex Palmer,Christian Bradley (II),David Rubin (II),Professor Robert Winston,Florence Sparham,Oliver Parkham,Rachel Essex,Suzanne Ca. Site map for www.theory-of-evolution.net. 29+ Evidences for Macroevolution: the Scientific Case for Common Descent. Volution, the overarching concept that unifies the biological sciences, in fact embraces a plurality of theories and hypotheses.
In evolutionary debates one is apt to hear evolution roughly parceled between the terms "microevolution" and "macroevolution". Microevolution, or change beneath the species level, may be thought of as relatively small scale change in the functional and genetic constituencies of populations of organisms. That this occurs and has been observed is generally undisputed by critics of evolution. What is vigorously challenged, however, is macroevolution. Macroevolution is evolution on the "grand scale" resulting in the origin of higher taxa. Universal common descent is a general descriptive theory concerning the genetic origins of living organisms (though not the ultimate origin of life). This article directly addresses the scientific evidence in favor of common descent and macroevolution. What is Universal Common Descent? How to Cite This Document. Evolution I.
Evolution II. Understanding Evolution. The bacteria that changed the world - May, 2017 The make-up of Earth's atmosphere, once the domain of Earth science textbooks, has become an increasingly "hot" news topic in recent decades, as we struggle to curb global warming by limiting the carbon dioxide that human activity produces.
While the changes that humanity has wrought on the planet are dramatic, this isn’t the first time that one species has changed Earth’s atmosphere. Three billion years ago, there was no free oxygen in the atmosphere at all. Life was anaerobic, meaning that it did not need oxygen to live and grow. Evolution: Online Course for Teachers: Teaching Evolution.
Evolution: Online Course for Teachers: SESSION 5 How Did Humans Evolve? Is Evolution Still Happening? At the end of this session you will be familiar with: • Fossil evidence for human evolution • Major fossil groups: Australopithecines, Homo habilis, Homo erectus, Homo neanderthalensis, and Homo sapiens modern and present • Molecular evidence for human evolution • The genetic relationship between humans and our closest living relatives • Major characteristics selected for in hominid evolution -- bipedalism and big brains -- and the adaptive advantages of each • Hypotheses about evolution of bipedalism.
Evolution: Videos for Teachers: Evolution Case Studies. 250,000-year-old skull found in Ethiopia. Evolution: Videos for Students: Evolving Ideas. Evolution. The similarities described above are not the only ones scientists have noticed among organisms of different species.
The image to the left shows that embryos of certain species develop almost identically, especially in the early stages. Such physical similarities indicate that there are genetic similarities between the organisms. These similarities can be considered evidence that the organisms shown probably descended from a common ancestor. The similarities between living species-- in ancestry, in homologous and vestigial structures, in embryological development, and in biochemical compounds-- all could be explained as extremely remarkable coincidences. However, a far more probable explanation of these similarities is that species have arisen by descent and modification from more ancient forms. Opponents of evolution want to make a place for creationism by tearing down real science, but their arguments don't hold up. When Charles Darwin introduced the theory of evolution through natural selection 143 years ago, the scientists of the day argued over it fiercely, but the massing evidence from paleontology, genetics, zoology, molecular biology and other fields gradually established evolution's truth beyond reasonable doubt.
Today that battle has been won everywhere--except in the public imagination. Embarrassingly, in the 21st century, in the most scientifically advanced nation the world has ever known, creationists can still persuade politicians, judges and ordinary citizens that evolution is a flawed, poorly supported fantasy. They lobby for creationist ideas such as "intelligent design" to be taught as alternatives to evolution in science classrooms. As this article goes to press, the Ohio Board of Education is debating whether to mandate such a change. Some antievolutionists, such as Philip E. 1. All sciences frequently rely on indirect evidence. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
Main Page - EvoWiki. Evolution and the origin of life. Mass Extinction Underway. Human beings are currently causing the greatest mass extinction of species since the extinction of the dinosaurs 65 million years ago. If present trends continue one half of all species of life on earth will be extinct in less than 100 years, as a result of habitat destruction, pollution, invasive species, and climate change. (For details see links below.) This website began on April 22, 1998 with the posting of the article below. (The article is still here to provide historical context.) Following the article are more than 300 links to recent authoritative reports and updates about the current mass extinction.