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Transportation

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Dan Nosowitz via PopSci.com

When Sir Richard Branson unveiled the Virgin Oceanic submarine, he noted that "More men have been to the moon than have been down further [underwater] than 20,000 feet." To that end, he and explorer pal will take the submarine to the deepest trenches

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Kevin Bullis via TechnologyReview.com

Federal ethanol mandates, which have led to a steady increase in the production of ethanol made from corn, are a major reason why food prices worldwide have reached record levels in the past several months, according to some economists.

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