Agence France-Presse: Time is running out to limit global warming to two degrees Celsius (3.6 degrees Fahrenheit), the UN's climate experts warned Sunday, saying current carbon emissions were a potential path to disaster.
Crowning a landmark review, the Intergovernmental Panel on Climate Change (IPCC) said emissions of three key greenhouse gases were at their highest since more than 800,000 years ago, when mammoths and mastodons roamed the earth.
Earth, it warned, is on a likely trajectory for at least 4 C warming...