As a social anthropologist, I naturally accept and even stress the fact that there are major differences, both mental and psychological, which separate the different races of mankind. Indeed, I would be inclined to suggest that however great may be the physical differences between such races as the European and the Negro, the mental and psychological differences are greater still.

I put a bullet into the back of the crocodiles neck just behind the head, thus killing it. If a crocodile is hit in any other part of its anatomy it disappears into the water and is irrecoverable.

The trip I made to Angola to study the prehistoric contents of the gravel beds as a means of deciding the age of the deposits and their economic potential was the first time prehistory had ever been used for such a purpose.

The author knows just what he wants to illustrate and how he would like it to be done.

When my father arrived in Kenya, he had found the Kikuyu way of life similar to that of the British at the time the Romans invaded England 2,000 years ago.

Olduvai Gorge gives us one of the most remarkable stories of the past-the last chapter of the Earth's history, starting at the present day, right away back 2 million years.

Stone tools are fossilized human behavior.