Science Global warming: How 2013 broke records

Last year was between the sixth and hottest ever recorded, and other records for extreme weather and melting permafrost have been broken, according to a report released by the National Oceanic and Atmospheric Administration.

By , LiveScience Senior Writer

NOAA map by Dan Pisut, NOAA Environmental Visualization Lab

If global warming could be compared to middle-age weight gain, then Earth is growing a boomer belly, according to a newly released report on the state of the global climate.