Trends in nighttime temperatures are a symptom of a world warming from from climate change.
Halfway through 2017, the year is the second hottest on record, even without an El Niño to help boost its temperature.
The record global temperature of 2015 is likely to become the norm by 2040, and possibly even earlier.
Flight delays and restrictions could become more common as temperatures rise due to climate change.
Rising background temperatures are conspiring to make Arctic winter warm waves more common and persistent.
A new, interactive map shows where studies have found a discernible role for warming in extreme weather events.
A scorcher of a heat wave broke temperature records across the West and helped fuel new wildfires.
One of Africa's driest regions - the Sahel - could turn greener if the planet warms more than 2 degrees Celsius.
Billions of people call cities home, and they're going to get a lot hotter because of climate change.
Weather-related disruptions at so-called "chokepoints" could limit global food supplies and push up prices.
A major heat wave that helped fuel deadly wildfires in Portugal was more likely because of global warming.
Large wildfires are becoming increasing common and severe in boreal forests around the world.
Lyme disease is increasing in the Northeast, and is likely to spread to other areas as the world warms.
Here’s how climate change plays a role in tick migration and the spread of Lyme disease.
Rising temperatures are set to wipe out half of Ethiopia’s coffee-growing areas.
Climate change may be altering the characteristics and impacts of drought across the U.S.
Planes have been grounded in Phoenix as life-threatening heat descends across the Southwest.
Deadly heat waves could impact half to 75 percent of the world's population if greenhouse gases aren't curtailed.
New NASA data shows this May was the second-hottest May on record.
See the trend in hot days in these U.S. cities.