New NASA findings reveal that the tiny, fiery world includes some unexpected features
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Climate Change: Polar Ice Sheets Melting Faster, Raising Sea Levels
The rate of polar ice-sheet melting is key to calculating how fast sea levels are rising. Now, scientists have a new analysis of polar ice loss in Greenland and Antarctica—and the numbers aren’t good for the planet.
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Watch the 2012 Atlantic Hurricane Season in 4.5 Minutes
This year’s storms in video format
Flickering Stars: Could Aliens Be Sending Us Signals?
An improbable search for ET could produce real results
EcocentricGoing Green
U.N. Global Warming Summit: Heading Over the Climate Cliff
The U.N. climate summit is beginning in Middle Eastern city of Doha—but expectations are as low as they can be. Why can’t the world take the climate crisis seriously?
Meet Makemake — the New Pluto
A little world with an unusual name has some other strange features too
A Guidebook to the Universe — and to Ourselves
Neil Turok’s new book covers cosmos and quarks, yes, but also schools and South Africa and you and me
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After Sandy: An Environmentalist Goes Home
Sierra Club President Michael Brune grew up in the Jersey shore town of Chadwick Beach—which took a direct hit from Superstorm Sandy. This is what he saw when he came home.
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The War on Coal Is Being Won in the U.S., but the Real Battle Is Overseas
A new report predicts that up to 1,200 new coal plants could be built around the world. Why that would be game over for the climate
A Mars Announcement ‘for the History Books’? Not So Fast
Big news from Mars may turn out to be more modest than it sounds