The 10,000-year-old mass of ice will be gone in the next five years, scientists say.
"Climate change can no longer be denied, or ignored," the president says.
Scientists say the biggest extinction event ever was caused by comparable rate of cO2 emissions to those seen today.
EU statistics suggest UK is unlikely to meet 15% renewable energy target by 2020.
Maine's shrimp industry is suffering and its lobster catch is also in danger.
NASA pointed directly at human activity as the force driving the climatic changes
Governments will submit national plans for reining in greenhouse gas emissions by an informal deadline of March 31, 2015.
As world leaders gather in Peru, what to expect from the negotiations.
Scientists hope to wield the Earth itself as a weapon against global warming.
The U.N. apparently had no idea.
The model also shows global levels of carbon monoxide.
The U.S. and the European Union engaged in "trench warfare" to override Tony Abbott and get climate change on the G20 agenda
No. 3 greenhouse gas emitter India faces growing pressure to devise a clear strategy and step out of China's shadow during pivotal global climate talks.
Thunderstorms are also going to become more violent.
The world's biggest emitters of greenhouse gases have agreed to reduce emissions. It's politically powerful, but environmentally unsound
Climate change, the Pentagon writes, requires immediate action on the part of the U.S. Military
Amid global turmoil, the secretary-general says climate change will dominate General Assembly discussion along with Ebola and ISIS.
Testing aims to make Canadian Armed Forces better prepared