The world has not warmed up very much since the millennium. Twelve years is a reasonable time... it (the temperature) has stayed almost constant, whereas it should have been rising - carbon dioxide is rising, no question about that.

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.

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

The world has not warmed up very much since the millennium.

The oil companies regard nuclear power as their rival, who will reduce their profits, so they put out a lot of disinformation about nuclear power.

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

I'm not a pessimist, even though I do think awful things are going to happen.