The rest of your DNA

    The tiniest, most complicated set of instructions just got a little easier to read, thanks to a giant scientific project called ENCODE, which recruited more than 400 scientists from all over the world.   Those instructions reside in a long molecule called DNA. And one copy of this DNA resides within almost every

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Are we alone?

  If aliens ever sent us a message, scientists hope to pick it up in a remote part of northern California.   There, in a clearing nestled amid the volcanoes of the Cascade Range, 42 radio dishes point together at the sky. The dishes, each 20 feet across, form a single, giant scientific instrument called

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