The 10 hottest years ever recorded have all occurred since 1998.
Snow cover in North America is on the decline in part due to climate change.
See how snowfall is trending in these U.S. cities.
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.