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New Agtivist: Fixing school lunch in the nation’s capital

Meet Andrea Northrup, a 25-year-old working to bring local foods into the public schools of Washington, D.C.

Green Living Tips

Ask Umbra: Are we about to wreck space, too?

A reader asks if it’s ethical to mine asteroids. Umbra takes us on a voyage of discovery.


Facebook will sell me to you, and you to me

Facebook is going to try to turn personal relationships into an advertising medium. That will be a big turn-off -- and will spur the search for better alternatives.


NYC learns to heart bicycles

Just over a year ago, New York's transportation commissioner was raked over the coals for her romance with bikes. Now, it seems the city has fallen for them too.

Climate & Energy

Radiohead and Mood music for a climate movement?

The band's introspective dread may not pump you up for a protest rally. But its willingness to face despair head on might be just what climate activists need.

Climate Skeptics

Winning the climate culture war

More science will not cure climate skeptics and pandering to conservatives can only win battles, not the war. So, what's the right strategy in the climate fight?


What humans hath wrought: What happens when we mess with Mother Nature?

A hole-in-the wall museum in Pittsburgh, run by an oddball art professor, offers a sober -- and sobering -- glimpse of what we’ve done to life as we know it. Good? Bad? You make the …

Climate Skeptics

It wasn’t just the billboards: How activists brought down the Heartland Institute

Yes, the Heartland Institute shot itself in the foot with its stupid Unabomber billboard. But what really hurt was the anti-Heartland campaign joined by tens of thousands of citizen activists.

Urban Agriculture

A guide to the sweet and simple life

The creator of the new DIY-themed book "Homesweet Homegrown" shares a few secrets and a recipe.