The climate is doing its usual tricks. There's nothing much really happening yet. We were supposed to be halfway toward a frying world now.

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.

If we gave up eating beef we would have roughly 20 to 30 times more land for food than we have now.

Civilization in its present form hasn't got long.

We need a more authoritative world...What's the alternative to democracy? There isn't one. But even the best democracies agree that when a major war approaches, democracy must be put on hold for the time being. I have a feeling that climate change may be an issue as severe as war. It may be necessary to put democracy on hold for a while.

If you start any large theory, such as quantum mechanics, plate tectonics, evolution, it takes about 40 years for mainstream science to come around. Gaia has been going for only 30 years or so.

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