Latest Articles
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What will it take to restore the Gulf Coast and its people?
A look back at the response to the BP oil spill -- and thoughts on where we go from here.
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18 numbers that explain the BP oil spill
Five years ago, the Deepwater Horizon explosion triggered the largest oil spill in U.S. history. Here's what you still need to know.
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Everything I thought I knew about water in California is wrong
Yes, farmers use a whole lot of Golden State water. But there's no easy solution to the state's drought woes in turning off their taps.
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These charts show why corn is king
Check out our infographic on corn and subsidies.
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Our crazy farm subsidies, explained
Once upon a time, we started subsidizing agriculture.
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How can I tell if a business is really “green”?
A reader wonders how to suss out a business's eco-cred. Umbra offers a few conversation starters.
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Obama keeps saying smart stuff about climate change, will say more of it on Earth Day
The president will visit the Florida Everglades on Wednesday to talk about how climate change threatens the economy.
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Your spring guide to delicious leek recipes
Here's how to store, prep, and make the most of leeks, without wasting a scrap.
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Don’t be fooled by Jeb Bush’s new rhetoric on climate change
Bush said some stuff about climate change that sounded "moderate," but he still doesn't actually want to do anything about the problem.
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“Ex Machina” takes on nature vs. nurture — with robo-babes
Ex Machina, the new film written and directed by Alex Garland, explores -- quite sordidly at times -- what "power" really means.