Civilization in its present form hasn't got long.

I've got personal views on the '60s. You can't have freedom without paying the price for it.

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.

By the end of this century, climate change will reduce the human population to a few breeding pairs surviving near the Arctic.

NASA will send up a big sun shade that will be in orbit between the earth and sun and deflect 2 or 3 percent of the sunshine back into space. It would be cheaper than the international space station.

Only rarely do we see beyond the needs of humanity, and he linked this blindness to our Christian and humanist infrastructure. It arose 2,000 years ago and was then benign, and we were no significant threat to Gaia. Now that we are over six billion hungry and greedy individuals, all aspiring to a first-world lifestyle, our urban way of life encroaches upon the domain of the living Earth.

Science always uses metaphor.