Since the first Earth Day in 1970, the average annual temperature in every state has climbed.
As the climate changes, see the trend in warmer-than-normal spring days in these cities.
As the climate warms, maples are being tapped earlier in the year to get the sap that produces syrup.
Warmer winters have consequences, including for our winter fun.
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.
An examination of how high temperatures throughout the year are projected to rise by the end of the century under two different emissions scenarios.
Sea level rise is causing more coastal flooding in the U.S. See how many floods have a human fingerprint in these cities.