Charles Robert Darwin ...proposed and provided scientific evidence
that all species of life have evolved over time from common ancestors
through the process he called natural selection. The fact that
evolution occurs became accepted by the scientific community and the
general public in his lifetime, while his theory of natural selection
came to be widely seen as the primary explanation of the process of
evolution in the 1930s, and now forms the basis of modern evolutionary
theory. In modified form, Darwin’s scientific discovery remains the
foundation of biology, as it provides a unifying logical explanation
for the diversity of life.
http://en.wikipedia.org/wiki/Charles_Darwin
http://youtube.com/watch?v=VntFEWF8I8A
