There are now 96 million "shade balls" floating on the surface of the L.A. Reservoir. Watch the video.
Hillary Clinton released her big climate plan, but here's what she won't talk about.
Ohio Gov. John Kasich doesn't "want to overreact" to global warming.
The GOP presidential hopeful wants to learn more about faraway worlds. Our planet, not so much.
Here are the worst offenders in a new report on the power sector's carbon pollution.
Bees are essential for life as we know it, but we're wiping them out.
Low-income households account for less than 5 percent of rooftop solar power.
Air travel is the largest unregulated source of carbon pollution in the U.S. -- but not for long.
But there's not much evidence that it has so far -- in part because oil and gas companies won't share their data.