May 2016 was the warmest May on record globally, capping off a streak of 13 such record-setting hot months.
May was the fifth record warm month this year, upping the odds that 2016 will be the hottest year on record.
Wildfires have forced a drastic cut to oil sands production in Canada, exposing a growing climate risk.
For the first time, carbon dioxide emissions from an electric power plant have been solidified.
This year's El Niño is officially over, but La Niña could be just around the corner.
Alaska just had its warmest spring on record and is on track for its hottest year, thanks in part to global warming.
Arctic sea ice shrank to its fourth-lowest level in 50 years last month, setting a new record low for May.
Scientists say there's a problem with the way they account for methane's effect on the climate.
The easing of California's drought has boosted the state's ability to produce hydropower.
A new study finds that the Canadian tar sands are a major source of secondary organic aerosols.
New research shows acidification caused by carbon dioxide kills and stunts baby Dungeness crabs.
The U.S. led the world in oil production last year for third year in a row, ahead of Saudi Arabia and Russia.
A slowdown in Atlantic currents that worsened blizzards, floods and hurricanes may have been natural.
April 2016 was the hottest April on record globally.
Temperatures we think of as normal are getting warmer.
With the streak of record-warm months continuing, 2016 is looking likely to become the hottest year on record.
Falling carbon emissions from the electric power sector could help states meet their climate goals.
Marshes are used to reduce flooding, and new research shows how they could flourish as seas rise.
Carbon dioxide levels are nearing their annual peak, and they may not dip below 400 ppm again.
Forests that regrow after being cut play an unexpectedly valuable role in sequestering carbon emissions.