Scientists say changes in tropical waters could be responsible for the recent "pause" in rising temperatures.
You won't believe how many chickens live on this planet.
Yosemite isn't the only park facing a growing risk of wildfires.
A reader wonders if she's harming hummingbirds. Umbra busts out her binoculars and goes looking for answers.
Skeptics say global warming is over. They're wrong.
Photographer Matt Johnson traveled to Colorado in June 2013 and shot time-lapse footage of the West Fork Complex Fires.
The difference between a country’s extraction, production and consumption emissions are what we call "carbon gaps." Here's a look at how different countries compare.
The influential timber industry has its own set of standards, and environmentalists aren't happy.
Climate change is so dire and social change is so slow. Is there any hope?