Earlier we blogged about Earth's hot twin, an extrasolar planet that bears striking similarities to our home sweet home. Whether they are scorching gas giants or frozen ice queens, these alien Earths appear to be the next hot focus for cosmological research. That's where NASA's newest space telescope comes in.

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Treehugger, one of our favorite green technology blogs, reported on this clever little item last week: a cell phone designed to run on sugary water. The device works by breaking down carbohydrates - sugar - in an electricity-generating chemical reaction.

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