The world's coolest data centers

Data centers gobble up energy and generate heat, but here are some data centers that try to do it with their own flair

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Pionen Data Center, Sweden: Located in a Cold War era defense bunker, this data center could take a hit from an H-bomb and keep on ticking. It takes advantage of some other military technology, enlisting dual submarine engines to power backup-generators in case the conventional power grid fails. To make the working day bearable in a granite cave 100 feet below the streets of Stockholm, the facility has greenhouses, an artificial waterfall and a 686-gallon salt-water fish tank.

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The world's coolest data centers

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