Activists from ecological group "Revolution Ecolo" wear masks of (L-R) French singer Johnny Hallyday, presidential candidates Nicolas Sarkozy, Segolene Royal, and President Jacques Chirac, as they take part in a "soccer match against the planet" after the close of a conference on global ecological governance in Paris, February 3, 2007. The Intergovernmental Panel on Climate Change (IPCC) presented its report on Friday assessing the human link to pollution, global warming and climate change in Paris. REUTERS/Benoit Tessier (FRANCE)