Most of us live in parts of the world where we don't expect to see much, and we wouldn't necessarily notice things that are crashing.

Somewhere in our DNA must lie the key mutation (or, more probably, mutations) that set us apart—the mutations that make us the sort of creature that could wipe out its nearest relative, then dig up its bones and reassemble its genome.

Though it might be nice to imagine there once was a time when man lived in harmony with nature, it’s not clear that he ever really did.

I don't think there are too many places left that humans haven't pretty thoroughly explored.

Most of us live in parts of the world where we don't expect to see much, and we wouldn't necessarily notice things that are crashing.

If in your lifetime you watch a species go extinct, or plummet almost to the point of extinction, that is a sign that something really serious is going on.

We're talking really huge global-scale change, and I did not feel that I had the prescription for that kind of action, so I'm going to leave it to the reader.