All the modelling we do shows that the climate is poised on the jump up to a new hot state. It is accelerating so fast that you could say that we are already in it.

The problem is we don't know what the climate is doing. 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.

If it hadn't been for the Cold War, neither Russia nor America would have been sending people into space.

Let's make hay while it lasts.

The inertia of humans is so huge that you can't really do anything meaningful.

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

Evolution is a tightly coupled dance, with life and the material environment as partners. From the dance emerges the entity Gaia.