Climatologists are all agreed that we'd be lucky to see the end of this century without the world being a totally different place, and being 8 or 9 degrees hotter on average.

There is little evidence that our individual intelligence has improved through recorded history.

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

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

We'd never have got a chance to go outside and look at the earth if it hadn't been for space exploration and NASA.

No one who has experienced the intense involvement of computer modeling would deny that the temptation exists to use any data input that will enable one to continue playing what is perhaps the ultimate game of solitaire.

If it hadn't been for the Cold War, neither Russia nor America would have been sending people into space.