Perhaps the single most important thing that we can do to undo the harm we have done is to fix firmly in our minds the thought: the earth is alive.

Florida will be gone altogether, the whole damned place, in not too long.

There is little evidence that our individual intelligence has improved through recorded history.

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

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

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.

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