2017 was globally the third-warmest year on record. See the rest of the top 10 here.
As the climate changes, the number and cost of weather disasters is increasing in the U.S.
As the world warms, snow cover in North America is on the decline.
Daily record highs are dramatically outpacing daily record lows in the U.S. in the last 20 years.
Here's where winters are warming the most across the U.S.
Watch how lake effect snow is expected to change in the coming decades.
Octobers are about 2°F warmer in the U.S. than a generation ago.
Globally, 2017 is trending as the second hottest year on record, only behind 2016.