The US head of state grew up on food stamps. The British head of state grew up on the postage stamps.

For all the chatter that Britain has moved beyond class, recent studies have found that it determines the life chances of British people more today than at any point since the Second World War... A child born into a rich family in Britain will almost certainly live and die rich, while a child born into a poor family will almost certainly live and die poor.

The bombs held in current nuclear arsenals are seventy times more powerful than the bomb dropped on Nagasaki. If we don't begin opposing the drift towards more and more of them, we will live in the shadow of the mushroom cloud for the rest of our lives - and millions may die there.

There is an emerging scientific consensus that global warming is making hurricanes more intense and more destructive. It turns out that Katrina fits into a pattern that scientists and greens have been trying to warn us about for a long time.

The greatest trick the rich - and their cheerleaders on the right - ever pulled was convincing the world that class didn't exist. Out here in the real world, it is more real and more rigid than it has been for a century.

All people deserve respect, but not all ideas do.

The climate-change deniers are rapidly ending up with as much intellectual credibility as creationists and Flat Earthers. They are nudging close to having the moral credibility of Holocaust deniers.