http://www.iflscience.com/environment/2015-likely-be-warmest-record

This year will likely be the warmest on record, with the period of 2011-2015 clocking in as the warmest five-year stretch since documentation began, according to the World Meteorological Organization’s (WMO) state of the global climate report. The cause has been put down to man-made climate change driven by rising greenhouse gas emissions, and has been exasperated this year by a particularly strong El Niño event.

“The state of the global climate in 2015 will make history as for a number of reasons,” said the WMO’s secretary general Michel Jarraud, in a statement. “2015 is likely to be the hottest year on record, with ocean surface temperatures at the highest level since measurements began. It is probable that the 1°C [1.8°F] threshold will be crossed. This is all bad news for the planet.”