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.

Sadly, it's much easier to create a desert than a forest.

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

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.

There aren't just bad people that commit genocide; we are all capable of it. It's our evolutionary history.

So-called 'sustainable development' is meaningless drivel.

We'd never have got a chance to go outside and look at the earth if it hadn't been for space exploration and NASA.