The 10 hottest years ever recorded have all occurred since 1998.
Warmer winters have consequences, including for our winter fun.
Warming winters may sound great at first, but they bring new problems.
Extreme cold is decreasing, as the lowest temperature observed each year is trending upward.
Globally, 2016 was the hottest year on record. That makes three years in a row of record setting heat.
See the trend in winter high temperatures across the U.S.
The North Pole and the surrounding Arctic regions are seeing record high temperatures.
Record highs in the U.S. could outnumber record lows by 15-to-1 in 50 years from climate change.