No government is here forever. And there are other forces - the most potent force in our society, in fact, big business - doing good for the environment.

Science is often misrepresented as "the body of knowledge acquired by performing replicated controlled experiments in the laboratory." Actually, science is something broader: the acquisition of reliable knowledge about the world.

I decided that now is the time to start doing the things that really interest me and I find important. It was in the 10 years of the MacArthur grant that I began working on my first book... and I began putting more work into environmental history.

It invites a search for ultimate causes: why were Europeans, rather than Africans or Native Americans, the ones to end up with guns, the nastiest germs, and steel?

In parts of Montana, salt concentrations in soil water, have reached those double those of seawater.

Forced to choose between limiting population or trying to increase food production, we chose the latter and ended up with starvation, warfare, and tyranny.

Today Charles Darwin is best known for establishing the fact of evolution and for recognizing the major role of natural selection in driving it.