Who decides what's "natural" and what's "eco-friendly"? Umbra peels back the latest on the labeling debate.
Santa Monica couldn't have gotten so green without an engaged community, says its assistant director of sustainability. Solar-powered ferris wheels don't hurt, either.
Is it possible to have an enviro-themed costume that's not totally lame? Umbra scares up some suggestions.
Four men from small villages in the Niger Delta hope to hold Shell accountable for a series of pipeline leaks.
More Americans than ever are riding Amtrak, a 49 percent increase over 2000.
We're sure he's learned his lesson.
Bill McKibben did a bang-up job of talking about climate change on "Real Time with Bill Maher" -- and it got David Roberts thinking about effective climate communication.
What Iowa needs is a long, wet autumn -- something it's not likely to get.
Why should you care? Because California is where celebrities live. Other celebrity gossip inside!