"Arctic sea ice this summer melted to a record low extent or will come a close second, two different research institutes said on Tuesday, confirming a trend which could yield an ice-free summer within a decade."

"Five years after the release of An Inconvenient Truth, Al Gore returns to the world stage with an updated slide show. Can his message be any more successful this time around?"

"Ancient Andean crops and farming methods are revived as Peruvians struggle to deal with the effects of climate change."

"The colorful, six-sided tiles with pictures of trees, rocks, and landscapes formed larger hexagons, creating islands across six tables in the second-floor gallery of the Goethe-Institut in Washington, D.C. On a recent Friday evening, more than 60 people gathered to play a game that has sold 15 million copies worldwide since 1995. The tiles were part of 'The Settlers of Catan,' a game where players trade and compete for resources while constructing cities."

"Taking on controversial claims that clouds are a main driver of temperature changes across the globe, a Texas A&M University atmospheric scientist finds evidence of cherry picking and errors. New findings published Tuesday appear to undermine a controversial study - oft-cited by those who downplay the human impacts of climate change - that claimed variations in cloud cover are driving temperature changes across the globe."

"500 MILES FROM THE NORTH POLE -- The minimum summertime volume of Arctic sea ice fell to a record low last year, researchers said in a study to be published shortly, suggesting that thinning of the ice had outweighed a recovery in area."

The U.S. and Australia have been the breadbasket that fed famine-stricken areas of Africa and Asia in recent decades. Global climate change may be weakening that foundation of world food security.

"Protesters hope to persuade President Obama not to approve the controversial Keystone XL oil pipeline that would run from Canada to Texas. But the State Department already says its safe, and supporters point to thousands of new jobs."