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  1. Health & Medicine

    Tame-walk potion

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

    By Susan Milius
  2. Earth

    Tunguska, a century later

    Asteroid or comet blamed for Siberian blast of 1908

    By Sid Perkins
  3. 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.

    By Ashley Yeager
  4. Earth

    TNT buster

    A bacterium from Yellowstone could help break down TNT.

    By Rachel Ehrenberg
  5. Health & Medicine

    Brain trauma

    Cooling the body temperature of a child who has severe brain injury doesn’t seem to help recovery, but the jury is still out.