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  1. Earth

    A rapid rise for the Andes

    New evidence suggests that the South American mountain chain shot up 2.5 kilometers in a geological blink of an eye.

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  2. Health & Medicine

    Tame-walk potion

    A one-two sting and a cockroach lets a wasp lead it like a dog on a leash.

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  3. Earth

    Tunguska, a century later

    Asteroid or comet blamed for Siberian blast of 1908

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  4. Space

    Dispatch from Mars, Sol 9

    The Phoenix Lander's robotic arm scoops its first experimental sample, and scientists prepare to start their scientific studies on the Martian soil.

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  5. Earth

    TNT buster

    A bacterium from Yellowstone could help break down TNT.