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Every State Had a Top 10 Hottest Year

Each of the lower 48 states is having one of its 10 hottest years on record.

How Hot Has 2016 Been in These U.S. Cities?

An analysis of U.S. cities shows more than half are having one of their 5 hottest years on record.

Climate Change Will Stir ‘Unimaginable’ Refugee Crisis

Military leaders say warming is the greatest threat to 21st-century security and could lead to mass migrations.

Tennessee Wildfire is ‘Unlike Anything We’ve Ever Seen’

Intense drought and powerful winds conspired to whip a massive wildfire that endangered Gatlinburg, Tenn.

Threatened Nations Aim for 100 Percent Renewables

The Climate Vulnerable Forum (CVF) committed to update their climate action plans submitted as part of the U.N. climate pact.

What a Warmer Future Means for Southeastern Wildfires

Drought is fueling large wildfires in the Southeast, but the future of wildfires there in a warming climate is murky.

Thanksgiving Warming Projections

The cool days of late November will turn warmer on average in the coming decades.

The Arctic is a Seriously Weird Place Right Now

Warm air and oceans have caused Arctic sea ice growth to hit pause. That's not normal for November.

U.S. Record Highs Will Far Outpace Lows With Warming

If emissions aren't curbed, global warming could mean highs dramatically outpace record lows by mid-century.

2016 Will Be Hottest Year, UN Climate Meeting Told

2016 is set to be the hottest year on record by a significant margin, the WMO told international climate negotiators.

Toasty October Keeps U.S. on Track for 2nd-Hottest Year

After the third-warmest October on record, the U.S. is having it's second-hottest year-to-date.

Today’s Emissions, Tomorrow’s Warming

An examination of how high temperatures throughout the year are projected to rise by the end of the century under two different emissions scen…

Warm Temps Slow Arctic Sea Ice Growth to a Crawl

Warm weather has led to record low sea ice for October across the Arctic.

Deserts May Spread in Europe as Mediterranean Warms

Global warming is on track to disrupt the Mediterranean region more than at any time in the past 10,000 years.

Halloween Weather Extremes

Halloween weather can be highly variable depending on the year.

Heat, Then Deluge Fell a Town’s Beloved 600-Year-Old Oak

One of the oldest oak trees in the U.S. was dealt a death blow by extreme heat this summer.

Hottest Months on Record Have Something in Common

The record run of planetary heat has rewritten the record books.

September an Exclamation Point on String of Hot Months

Yet another month of planetary heat has basically ensured 2016 will be the hottest year on record.

Climate Change Means a Longer U.S. Growing Season

Later frosts mean longer growing seasons for the U.S.

Frost-Free Season is Getting Longer Across U.S.

Here's where in the U.S. the frost free season is growing the fastest.