[Kiev, October 24. Image via Getty.]

A woman gestures to the photographer in the center of Kiev on October 24, 2009, during a rally to kick off the International Day of Climate Action about global warming. Similar stunts actions gathered people with placards bearing the logo 350 to call for a cut in carbon emissions to 350 parts per million (ppm). The protests marks 50 days until world leaders meet in Copenhagen to thrash out a new climate change treaty. AFP PHOTO / SERGEI SUPINSKY (Photo credit should read SERGEI SUPINSKY/AFP/Getty Images)