This article examines the fossil evidence of our 6 million year evolution. Darwin's great insight, and the unifying principle of biology today, is that all species are related to one another like ...

The proportion of well-adapted organisms in a population can increase over the generations by the process of evolution by natural selection.

Evolution is the way that living things change over time. The first person who explained how evolution happens was Charles Darwin with his scientific theory of natural selection. Charles Darwin ...