FILE - This Aug. 29, 2005 file photo provided by NOAA shows a satellite image of Hurricane Katrina. U.N. climate experts say global warming accelerated since the 1970s, breaking more countries’ ... more 
FILE - This Aug. 29, 2005 file photo provided by NOAA shows a satellite image of Hurricane Katrina. U.N. climate experts say global warming accelerated since the 1970s, breaking more countries’ temperature records than ever before. The World Meteorological Organization’s analysis Wednesday, July 3, 2013 calls the first decade of the new millennium an unprecedented era of climate extremes ranging from heat waves in Europe and Russia, to droughts in the Amazon Basin, Australia and East Africa, to huge storms like Tropical Cyclone Nargis and Hurricane Katrina. (AP Photo/NOAA, File) less 
1 / 28
Associated Press | Photo By NOAA, File
Wed, Jul 3, 2013 11:21 AM EDT