"When Pope Francis appeared on the balcony of the Apostolic Palace, where he delivers an address each Sunday, he was met by the usual cheers and by an unusual forest of bright green oversized paper leaves."

"White House officials confirmed Thursday that in President Obama’s meetings this coming week with the president of Brazil, Dilma Rousseff, they’re going to be talking about climate change."

Scientists have cast new light on the earthquakes found in Greenland -- caused by calving of the glaciers coming off the island's mile-high ice sheet.

"Big changes are afoot for the energy sector in the next 25 years. Coal and gas are headed out and solar and wind are rushing to take their place on a multi-trillion dollar investment bonanza, according to a new report from Bloomberg New Energy Finance that scopes out the power generating landscape through 2040."

"A target date for Brazil to reach zero net deforestation, something climate activists have been asking for, is not expected to be a part of a U.S.-Brazilian joint climate declaration to be issued next week when President Dilma Rousseff visits Barack Obama in Washington, climate specialists say."

"New genetics research shows how cold-water corals can increase their resilience to global warming at a pace that could match climate change."

"Following on a record hot May in which much snow cover melted off early, Alaska saw no less than 152 fires erupt over the weekend. The numbers have only grown further since then, and stood at 291 active fires Thursday, according to the Alaska Interagency Coordination Center."

"Alberta will be doubling its carbon levy over the next two years – the first change in the tax’s eight-year history – as the province works on broader measures to burnish its image as a responsible oil producer."

"A Dutch court has ordered the government to cut greenhouse gas emissions by at least 25% by 2020, in a case environmentalists hope will set a precedent for other countries."

"The worst heat wave to hit Pakistan's southern city of Karachi for nearly 35 years has killed more than 1,000 people, a charity said on Thursday, as morgues ran out of space and public hospitals struggled to cope."