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Do helmets really keep cyclists safer?

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?

Climate & Energy

Ice going, humanity: Arctic melting at alarming rates

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.


No need to eat like a caveman — just eat your damn veggies!

New research suggests that we’ve bred much of the nutrition out of out food. What’s a discerning grocery shopper to do?

Climate & Energy

Would Mount Everest’s first conquerors recognize it anymore?

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.


Plotting a revolution: Inside the mind of a budding guerrilla gardener

Our fearless green-living pioneer prepares for a stealth attack on urban ugliness -- and shows how you can do it too.

Climate & Energy

Coal is the enemy of the human race, video edition

A short animated video explains exactly why coal has got to go.


Strengthening the food chain: Farmers and workers unite, find power in numbers

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.

Climate & Energy

Living with fire: Survival and stubbornness in California wildfire country

Susie Cagle’s family’s house burned to the ground in a 1977 wildfire. They rebuilt. She’s still trying to understand why.

Business & Technology

Bike til it hertz: College kids spin out campus electricity

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.