SLS: Crucial test for Nasa's 'mega-rocket'

Part of a giant rocket that will send humans back to the Moon has undergone a critical test.

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A few heavy storms cause a big chunk of nitrogen pollution from Midwest farms

New research shows that one-third of yearly nitrogen runoff from Midwest farms to the Gulf of Mexico occurs during a few heavy rainstorms. New fertilizing schedules could reduce nitrogen pollution.

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Scientists at work: Sloshing through marshes to see how birds survive hurricanes

Birds found along the Gulf Coast have evolved to ride out hurricanes and tropical storms. But with development degrading the marshes where they live, it's getting harder for them to bounce back.

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Biloxi's 15-year recovery from Hurricane Katrina offers lessons for other coastal cities

After the news media move on from a major disaster site, rebuilding continues for years.

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