(l-r) Kwame Kwei-Armah, Peter Tatchell, Sara Cox, Ken Livingstone, Andrew Motion, Hugh Fearnley-Whittingstall and Anthony Gormley attend the launch of 10:10, a historic environmental commitment to reduce the UK's carbon emissions by 10\% during 2010 at the Tate Modern gallery in central London

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Photo credit: © Matt Crossick / Alamy / Afripics
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Keywords: campaign, climate, environment, ten