Drought follows the plow cultivating marginal areas

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Table of contents

Ancestors in search of human origins by Johanson, Donald C.

Our changing earth by Canby, Thomas Y.

The Changing global environment

The origin of modern humans by Lewin, Roger

Timewalkers the prehistory of global colonization by Gamble, Clive

The third chimpanzee the evolution and future of the human animal by Diamond, Jared M.

The atlas of endangered animals by Pollock, Steve (Stephen Thomas)

The atlas of endangered places by Pollock, Steve

The Human impact on the natural environment. by Goudie, Andrew