We thought we knew 20 years ago. That led to some alarmist books – mine included – because it looked clear-cut, but it hasn’t happened. 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. The world has not warmed up very much since the millennium. Twelve years is a reasonable time. The temperature has stayed almost constant, whereas it should have been rising - carbon dioxide is rising, no question about that.

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.

One pound of uranium is worth about 3 million pounds worth of coal or oil.

I have a feeling that climate change may be an issue as severe as a war. It may be necessary to put democracy on hold for a while.

Civilization in its present form hasn't got long.

We live at a time when emotions and feelings count more than truth, and there is a vast ignorance of science

I wouldn't be against them (large wind turbines) if they actually worked.