[Sao Paulo, September 21. Image via Getty]

A Greenpeace activist (C) dressed-up as a turtle speaks to a passer-by about their national campaign in downtown Sao Paulo, Brazil on September 21, 2009. The campaign underway is part of a climate mobilization week aimed at raising awareness about climate change and the measures that can be taken to reduce its impact. AFP PHOTO/Mauricio LIMA (Photo credit should read MAURICIO LIMA/AFP/Getty Images)