Is there any real chance of averting the climate crisis?

Nasa's James Hansen was the first to point out the perils of climate change to the US Congress. Here, he begins a heated debate with experts from around the world, from China to the threatened Maldives, and argues that our leaders must be shaken out of their complacency. But will they show enough courage at next week's Copenhagen summit to take the first steps to saving the planet?

Is there any real chance of averting the climate crisis? | Comment is free | The Observer