New Scientist: Call it the new normal. Last year was the ninth warmest on record across the globe, according to NASA's annual analysis of surface temperatures. But by recent standards, it was nothing special: all but one of the hottest 10 years have happened since 2000.
The single exception - 1998 - was influenced by a very strong El Nio, in which warm water from the western Pacific spreads to the east, increasing the transfer of heat from the oceans to the atmosphere.
The global average figures from the...