JULY 17, 2007: An iceberg melts in Kulusuk Bay, eastern Greenland. Through 10 years of global boom and bust, of breakneck change around the planet, of terrorism, war and division, all people everywhere under that warming sun faced one threat together: the buildup of greenhouse gases, the rise in temperatures, the danger of a shifting climate, of drought, weather extremes and encroaching seas, of untold damage to the world humanity has created for itself over millennia. (AP Photo/John McConnico, File)
