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- Sweet Confusion: Does high fructose corn syrup deserve such a bad rap?
- Closed Thinking: Without scientific competition and open debate, much psychology research goes nowhere
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- Teens take home science gold: A low-cost, self-driving vehicle; battery alternatives and analyses of galaxy clusters claim top prizes at a global high school science competition
- Flagging loose bolts: “Smart alert washer” automatically flags when a nut is coming loose, warning of potential danger
- Pee is for power: The water in urine can be a source of hydrogen for electrical generators
Challenge
Porphyra seaweeds like this one (drying out at low tide on the sands of Brittany) carry porphyrans, compounds which don't show up in land plants and which can be digested by humans only if gut microbes have a genetic retrofit.
Credit: Mirjam Czjzek
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Coverage of the 2013 American Association for the Advancement of Science meeting
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