Explores equilibrium and non-equilibrium in undisturbed and disturbed ecological systems, examining how human activities affect the balance/imbalance of nature.

Why do we behave the way we do? Biologist Paul Ehrlich suggests that although people share a common genetic code, these genes "do not shout commands at us...at

Winner of Outstanding Book Award, 2000, Moral Development and Education, American Educational Research Association. Winner of the 2000 Book Award from the Moral