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.

Geological change usually takes thousands of years to happen but we are seeing the climate changing not just in our lifetimes but also year by year.

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

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

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

I'm not religious, but I put it that way because I feel so strongly. It's the one thing you do not ever do. You've got to have standards.

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