President Obama 'has four years to save Earth' | Environment | The Observer
http://www.guardian.co.uk/environment/2009/jan/18/jim-hansen-obama

there is an expert here

Barack Obama has only four years to save the world. That is the stark assessment of Nasa scientist and leading climate expert Jim Hansen who last week warned only urgent action by the new president could halt the devastating climate change that now threatens Earth.

Barack Obama has only four years to save the world. That is the stark assessment of Nasa scientist and leading climate expert Jim Hansen who last week warned only urgent action by the new president could halt the devastating climate change that now threatens Earth. Crucially, that action will have to be taken within Obama's first administration, he added.

lets hope he gets on with it

Not only is he America's hope for relevance but now he has to save the world too. It would be funny if it were not true. If America doesn't take a leadership role in this too (along with the others who have already stepped forward I might add) then as the great Australian poems reads: "We'll All Be Rooned" said Hanrahan!