È in corso a Cancun, in Messico, la sessione ministeriale della 16/a Conferenza Onu sui cambiamenti climatici (Cop16)

Environmental activists from Greenpeace demonstrate by holding images of world landmarks in the water during the United Nations Climate Change Conference in Cancun, Mexico, Wednesday Dec. 8, 2010. According to the UN weather agency, 2010 is “almost certain” to rank among the three hottest years on record, and in a report issued Tuesday experts said glaciers in southern South America and Alaska’s coastal mountains have been losing mass faster and for longer than glaciers elsewhere in the world. (AP Photo/Eduardo Verdugo)