There is tragic evidence to show that the paintings at the French prehistoric art sites are deteriorating.

Eloquent testimony to the recovery powers of wild animals frequently becomes apparent from the study of skeletons housed in museums.

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.

Raising funds for my fourth expedition proved to be very difficult.

People frequently ask me why I devote so much time to seeking out facts about man’s past…the past shows clearly that we all have a common origin and that our differences in race, colour and creed are only superficial.

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

To save an animal's life in order that it may suffer indefinitely is something I would never condone.