Nowadays if you're dependent on a grant - and 99% of them are - you can't make mistakes as you won't get another one if you do.

Those of us who consider ourselves to be somehow involved in the birthing of a new age, should discover Gaia as well. The idea of Gaia may facilitate the task of converting destructive human activities to constructive and cooperative behavior. It is an idea which deeply startles us, and in the process, may help us as a species to make the necessary jump to planetary awareness.

The big threat to the planet is people: there are too many, doing too well economically and burning too much oil.

Only nuclear power can now halt global warming.

There aren't just bad people that commit genocide; we are all capable of it. It's our evolutionary history.

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

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