The inertia of humans is so huge that you can't really do anything meaningful.

China will soon emit more greenhouse gases than America, but its regime knows if it caps aspirations there will be a revolution.

There is no clear distinction anywhere on the Earth's surface between living and nonliving matter. There is merely a hierarchy of intensity going from the 'material' environment of the rocks and the atmosphere to the living cells.

What we have lived through, the 20th century, has been like a great party. Adults now have had the best time humanity has ever had. Now the party is over and the Earth is reckoning up.

Just after World War II, this country led the world in science by every way you could measure it, yet the number of scientists was a tiny proportion of what it is now.

I'm a scientist, not a theologian. I don't know if there is a God or not. Religion requires certainty.

Nature favors those organisms which leave the environment in better shape for their progeny to survive.