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Chilean Students Find 'Green' Way to Charge Phones

As free as they make us, mobile phones still need to stay close to a power source.  Soon that may change with “green” power.   Three Chilean students got the idea for a plant-powered device to charge their cellphones, while sitting in their school’s outdoor courtyard during a break from exams, with dead mobile phones. Then, one of them had an “aha” moment. "It occurred to Camila to say about plants, "said inventor Evelyn Aravena. "'Why don’t you have a...

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