International

"The initiative involves 7,000 cities across 172 countries."

"Floating sea ice at the top of the world has set another troubling record for its low spatial extent, shattering a prior record set just two years ago for this key component of the planet’s climate system."

"The amount of new coal power being built around the world fell by nearly two-thirds last year, prompting campaigners to claim the polluting fossil fuel was in freefall."

"Opposition from the United States, Saudi Arabia and others has forced Germany to drop a reference to financing programs to combat climate change from the draft communique at a G20 finance and central bankers meeting."

"The Great Barrier Reef in Australia has long been one of the world’s most magnificent natural wonders, so enormous it can be seen from space, so beautiful it can move visitors to tears. But the reef, and the profusion of sea creatures living near it, are in profound trouble."

"A new study zeroes in on just how much of the Arctic sea ice's precipitous decline in recent decades is attributable to manmade global warming and how much is due to natural processes, finding that between 50 and 70 percent is caused by mankind."

"Cities from Oslo to Sydney are setting goals to curb climate change that exceed national targets, causing tensions with central governments about who controls policy over green energy and transport and construction."

"The world is getting warmer every year, thanks to climate change — but where exactly most of that heat is going may be a surprise."

"SOUTH ARI ATOLL, Maldives — There were startling colors here just a year ago, a dazzling array of life beneath the waves. Now this Maldivian reef is dead, killed by the stress of rising ocean temperatures. What's left is a haunting expanse of gray, a scene repeated in reefs across the globe in what has fast become a full-blown ecological catastrophe."