When?

Last Friday.

Who?

Who is Al Gore? A climate change campaigner - he won an Oscar for his documentary An Inconvenient Truth - and former US vice-president. The Norwegian Nobel Committee praised Gore, 59, as 'probably the single individual who has done most to create greater worldwide understanding of the measures that need to be adopted', through his lectures, films and books.

Why?

Why did they win the award? For their efforts to inform the world about man-made climate change, and laying the foundations to counteract it.

How?

How will Gore spend his half of the US$1.5 million prize money? He has said he will donate it to the Alliance for Climate Protection.

Where?

Where will Gore go from here? Gore's advisers were quick to rule out a suggestion that he would run for president in 2008. They said because he now has a huge, international platform to fight global warming, he may not want to do anything to diminish it.