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Levees and the illusion of Flood Control [Explainer]

My hometown lies on a sandbar, squarely in the floodplain of the Upper Mississippi River. Winona (Minnesota) benefited from its position along the river, rapidly growing to wealth as a steamboat port and lumber town. The second railroad bridge across the Mississippi was built there, and in 1900, Winona had more millionaires per capita than any other town in the country.

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Problems without Passports: Scientific Research Diving at U.S.C. Dornsife–Why Guam?

On Saturday morning we fly to Guam, an island about one fifth the size of Rhode Island. Guam is part of the United States, although as a territory it lacks voting representation in Congress or a say in presidential elections. Location is primary in real estate speculation, but it is also central to military strategy and ecosystem management

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Video: Paralysis breakthrough?

An experimental therapy helped a paralyzed man stand for the first time in 4 years. Chris Wragge speaks with Neurologist Dr

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Readers Respond to "How to Fix the Obesity Crisis" and Other Articles

SUBSIDIES AND HORMONES In “ How to Fix the Obesity Crisis ,” David H. Freedman proposed behavior modification as a solution, but it cannot be applied to 200 million overweight people. Freedman also seems to support subsidies for fruits and vegetables and other government-sponsored programs.

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Lose 5 pounds by summer in just 5 steps

If you’re looking to slim down before the start of summer, you’re in good hands. Joy Bauer's fat-blasting, five-step plan can help you lose five pounds fast.

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Too Hard for Science? An Early Warning System for Killer Asteroids

A week's warning could save an untold number of lives In ""Too Hard for Science?" I interview scientists about ideas they would love to explore that they don't think could be investigated. For instance, they might involve machines beyond the realm of possibility, such as particle accelerators as big as the sun, or they might be completely unethical, such as lethal experiments involving people.

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