Wildfires devastated large parts of California and the West, which has been suffering from a historic drought.
Thanks to El Niño and climate change, last year broke temperature records – and reduces any importance attached to the global warming 'hiatus.'
There's no agreed definition, no agreed starting point – and no data to back it up.
Look to the Pacific for reasons behind the hiatus.
Study of natural variability explains slowdowns in the rate of warming in recent decades – and is key to improving climate models.
Study raises new questions over the rate of ice melting, and thus sea level rise.
NASA's former climate chief, James Hansen, is lead author on a paper that predicts rapidly rising seas this century, but not all climate scientists believe the study's models are convincing.
New data set includes more accurate data from the Arctic, where more warming has occurred.
NOAA review reveals that difficult-to-explain slowdown in higher temperatures from global warming was based on faulty data.