When my parents were growing up the world's population was under three billion. During my children's lifetime, it is likely to exceed nine billion. You don't need to be an expert to realise that sustainable development is going to become the greatest challenge we face this century

I think most people who have dealt with me think I'm a pretty straight sort of guy, and I am.

What people should understand is that I adore the Labour party.

I think the journey for a politician goes from wanting to please all the people all the time, to a political leader that realises in the end his responsibility is to decide. And when he decides, he divides.

We are going to expand enormously -- our economy, our consumption, over the years to come ... But the consequences of that on emissions are going to be severe unless we change direction.

As for those that carried out these attacks there are no adequate words of condemnation. Their barbarism will stand as their shame for all eternity.

Enough of talking: It is time now to do.