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This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.

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Did you get a new tablet or computer this holiday season?

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A new smartphone? Maybe a new TV?

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Here's a question to tell if you're naughty or nice: what will you do with the old one?

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Most people just throw old gadgets away.

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That's how nearly 50 million metric tons of so-called e-waste were produced in 2012,the weight of 150 Empire State Buildings.

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By 2017, that flood of e-waste will grow to more than 65 million metric tons or 11 Great Pyramids worth.

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That's according to a study from researchers at the U.N., E.P.A.and elsewhere.

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Improper disposal of e-waste has led to some of the world's most toxic pollution hotspots.

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It's also a waste of resources, like valuable rare earth metals.

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China produces the most total e-waste.

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But we Americans hold the title for biggest individual gadget lovers and wasters.

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We produced an average of roughly 30 kilograms of e-waste per person in 2012.

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Impressive, given how light our gizmos are

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Reuse and recycling is the obvious answer.

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Good options exist, including some offered by gadget makers themselves, like Apple.

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But be careful.

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Some unscrupulous recyclers here in the U.S.simply dump the trashed gadgets overseas.

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That's no gift.

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Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.Thanks for listening.

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