A woman waits at a Paris' subway station on December 3, 2008 in front of a wall covered by Environmental activist group Greenpeace with a poster depicting French President Nicolas Sarkozy. The poster inspired by an iconic Barack Obama election image (designed by US graphist Shepard Fairey) reads 'To reduce 30% of greenhouse gas emissions in Europe? Yes you must!'. Getty Images logo Getty Images 14 months ago

A woman waits at a Paris' subway station on December 3, 2008 in front of a wall covered by Environmental activist group Greenpeace with a poster depicting French President Nicolas Sarkozy. The poster inspired by an iconic Barack Obama election image (designed by US graphist Shepard Fairey) reads 'To reduce 30% of greenhouse gas emissions in Europe? Yes you must!'.