In his most famous book On the Origin of Species, Darwin included four major arguments: that new species appear; that these new species have evolved from older species; that the evolution of species is the result of natural selection; and "that natural selection depends upon variations and the mai...

Human Evolution Today's human being is the product of millions of years of trial and error through the process of evolution. Charles Darwin was the first to bring fourth the idea of evolution. His theory involved the instance of natural selection. However he could not explain exactly how ...

Evolution and Genetic Engineering Activity 1: Why is AIDS so difficult to cure? How does the AIDS virus attack the body? â In 1979, the first reported AIDS case occurred in New York, and by mid-June 1981, unusual immune system failure among gay men was surfacing in the United States. The...