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.
A small increase in average temperature leads to a big increase in extreme heat.
This is how hot the United States could be in the future.
Even the modest rise in global temperatures to date have made India's already sweltering heat waves deadlier.
Warming waters are decreasing oxygen in the oceans, creating dead zones for marine plants and animals.
Excessive carbon emissions are worsening the ocean's health.
Summers are getting hotter across most of the country.
Extreme weather is estimated to cut production of major crops by 23 percent over the next 30 years.
Fossil fuels we burn affect warming in the Arctic, and solutions begin with understanding how and how much.