A recent photo of a guy and his kid riding without helmets spawned an intense Facebook debate. What do we really know about these things?
There's less and less ice covering the Arctic every year, and the ice that's left is getting thinner. This is a very bad sign.
New research suggests that we’ve bred much of the nutrition out of out food. What’s a discerning grocery shopper to do?
This week marks the 60th anniversary of the first ascent of Everest by Edmund Hillary and Tenzing Norgay. But thanks to climate change, these aren't the same peaks.
Our fearless green-living pioneer prepares for a stealth attack on urban ugliness -- and shows how you can do it too.
A short animated video explains exactly why coal has got to go.
The Farm Labor Reality Tour showed how a system that pits farmers and workers against each other can also unite them to work for common goals.
Susie Cagle’s family’s house burned to the ground in a 1977 wildfire. They rebuilt. She’s still trying to understand why.
Middlebury College students have turned their stationary bikes into miniature power plants. A spin on one of these rides will teach you not to take electricity for granted.