Every state saw hotter than average annual temperatures.
Will the Paris Agreement be enough?
Each of this year’s summer months has been among the hottest ever recorded.
It's the first time three simultaneous, major hurricanes have been recorded in this region.
New research shows flooding in the Midwest has become more frequent over the last 50 years.
But is it safe?
The country's pollution could contribute to 257,000 deaths over the next decade.
Toxic smog billowing from China's coal-fired power plants is making snowstorms in the U.S. worse.
Chinese cities are so toxic that 90 percent of them fail pollution standards, according to a new Greenpeace analysis.
Under pressure to get a publishing giant into the iconic tower, the site's developers may have sacrificed a core part of its green plans.
This man uploaded one photo every day. The results are startling.
A mere nine others have plans in the works, according to a new study.
We're 20 years away from catastrophe, says PricewaterhouseCoopers.
The world's biggest polluter will set up a carbon market by 2016. Here's why it matters.
The golden state's historic drought is forcing residents to reconsider the "yuck factor" of wastewater re-use.
Apple has a wide-ranging plan to keep its ever-expanding empire green—but it has a few holes.
Food giant General Mills now has some pretty sweet eco-bragging rights.
You’ve seen their logos on the sidelines, now get a peek inside the company trying to transform the world.