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U.S. Warming Since the First Earth Day

U.S. Warming Since the First Earth Day

Since the first Earth Day in 1970, the average annual temperature in every state has climbed.

More Warm Spring Days

More Warm Spring Days

As the climate changes, see the trend in warmer-than-normal spring days in these cities.

Here’s Your 2016-17 Winter in Review

Here’s Your 2016-17 Winter in Review

See how many days this winter were warmer or colder than average in your city.

Maple Syrup Season and Climate Change

Maple Syrup Season and Climate Change

As the climate warms, maples are being tapped earlier in the year to get the sap that produces syrup.

10 Hottest Years on Record

10 Hottest Years on Record

The 10 hottest years ever recorded have all occurred since 1998.

Global Warming Threatens Winter Sports

Global Warming Threatens Winter Sports

Warmer winters have consequences, including for our winter fun.

The Problems With Winter Warming

The Problems With Winter Warming

Warming winters may sound great at first, but they bring new problems.

Cold Getting Less Extreme

Cold Getting Less Extreme

Extreme cold is decreasing, as the lowest temperature observed each year is trending upward.