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The city near the famous Angkor Wat temple was only known from historical texts until now.
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The device elicited a neural response to light.
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Veterinarian and bestselling author dishes on his latest novel and our posthuman future.
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Some futurists predict humans will be able to upload their consciousness to computers in the near future.
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A new mathematical technique could bring echolocation to the masses.
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The Solar Impulse plane landed at Washington, D.C.'s Dulles International Airport on Sunday.
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