Related Why Files
AIDS vaccines.

Cancer cure fights blood vessels.

Language -- ape talk, baby talk, conquering dyslexia.

Inventing writing

Dust makes you sick.

Tracking air pollution

Tropical forests

Paper
A Dictionary of African Mythology: The Mythmaker as Storyteller, Harold Scheub, Oxford University Press, 2000.

Guns, Germs and Steel: The Fates of Human Societies, Jared Diamond, Norton, 1997.

The History and Geography of Human Genes, L. Cavalli-Sforza et al, Princeton University Press, 1994.

The Origin of Language, Merrit Ruhlen, John Wiley & Sons, 1994.

Electronic

Africa Focus multi-media reference site.

Giving credit, where credit is due.