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Ancient Peru was home to many cultures, most of them still mysterious. But as Sarah Parcak points her satellite-archaeology lens (and her new citizen-explorer project) at the Peruvian wilderness, the invisible past is primed to make a remarkable comeback.

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The drive to hook up a billion Indian people to the internet sounds daunting — but it may well make the internet better for everyone.

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You don’t “find your calling,” you fight for it — and other lessons from people who found their passion (sometimes late in life).

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Thomas Peschak takes stunning, up-close pictures of starfish, sharks and whales. His goal? To make us fall in love with them so much that we might even care about preserving the oceans.

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Archaeology is a puzzle. For Sarah Parcak, the arduous process of trying to find ancient treasures is made exponentially easier by satellite imagery.

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Corrupt officials and criminal operators are brilliant at hiding their money and actions from public view. But there’s something we can do about it, says the team at Global Witness. It starts with closing loopholes.

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Jason deCaires Taylor casts giant cement sculptures that weigh thousands of pounds — and then sinks them into the ocean. His idea: to create a unique underwater gallery that algae, corals and other sea creatures can call home.