Bloomberg reports: To say that 2015 was hot is an understatement. The average recorded temperature across the surface of the planet was so far above normal that it set a record for setting records.

The year was more than a quarter of a degree Fahrenheit warmer than the last global heat record—set all the way back in 2014—according to National Oceanic and Atmospheric Administration figures released on Wednesday. A quarter of a degree may not sound like much, but on a planetary scale it’s a huge leap. Most previous records were measured by hundredths of a degree.

A powerful El Niño is largely responsible for the year’s extremes, but make no mistake: This is what global warming looks like. Temperatures are rising 10 times faster than during the bounce back from the last ice age. Fifteen of the hottest 16 years on record have come in the 21st century. [Continue reading…]