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.

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

Sometimes string figures were used to illustrate stories, as in the case of an Eskimo example that depicts a man catching a salmon. Sometimes they had magic or religious significance.

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

We set up the promised clinic for the sick and wounded Masai.

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.

Sometime during the many millions of years that have elapsed since mammalian faunas came into existence, some sort of island crossed from West Africa to South America.