Canada withdraws from Kyoto pact
13 December 2011 Last updated at 04:54 GMT
The Canadian government has announced it will formally withdraw from the Kyoto Protocol on climate change, making it the first nation to do so.
The move was expected, as the country declared four years ago that it did not intend to meet its existing commitments, and its annual emissions have risen by about once third since 1990.
Nick Childs reports.