Gore says prize must spur action

Al Gore said global warming was a "planetary emergency"

Al Gore says his Nobel Peace Prize is an "honour" and a chance to "elevate global consciousness" about the threat posed by climate change.
The former US vice-president was awarded the prestigious prize jointly with the UN's Intergovernmental Panel on Climate Change (IPCC).

The White House congratulated Mr Gore but said it would not change its policies on global warming.

Mr Gore's film on climate change, An Inconvenient Truth, won an Oscar.

He said he accepted the Nobel award on behalf of scientists - like those in the IPCC - who had worked tirelessly for years to get the message about global warming out.