New global warming agreement. Symbolic, but adds pressure

A group of global political leaders meeting in Washington say they have reached a new agreement on tackling climate change.
Delegates agreed that developing countries will have to face targets for cutting greenhouse gas emissions as well as rich countries.
Of course the meeting has no official weight. But it's another symbolic signal of changing perceptions of climate chnage and the need to do something about it.

Among those taking part were US Senators John McCain and Joe Lieberman.
"I am convinced that we have reached the tipping point and that the Congress of the United States will act, with the agreement of the administration," McCain told the forum.

Click here for a full report from the BBC.

-David Adams