The southward advance of native African farmers with Central African crops halted in Natal, beyond which Central African crops couldn't grow - with enormous consequences for the recent history of South Africa.

Put another way, the chimpanzees' closest relative is not the gorilla but humans.

Recent discoveries about apes suggest, however, that a gorilla or common chimp stands at least as good a chance being murdered as the average human.

History followed different courses for different peoples because of differences among peoples' environments, not because of biological differences among peoples themselves

To dismiss the current extinction wave on the grounds that extinctions are normal events is like ignoring a genocidal massacre on the grounds that every human is bound to die at some time anyway.

What did the last Easter Islander say as he chopped down the last tree? The Easter Islanders didnt have anthropologists.

One person making a wrong decision affects the whole country.