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  1. Fly Moves: Insects buzz about in organized abandon

    Fruit flies display a penchant for spontaneous behavior that represents an evolutionary building block of voluntary choice, also known as free will, a controversial study suggests.

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  2. Planetary Science

    Water World: Extrasolar planet is loaded with hot ice

    Astronomers have found a Neptune-size planet outside the solar system that's composed mainly of water solidified under high pressure.

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  3. Animals

    Low Life: Cold, polar ocean looks surprisingly rich

    The first survey of life in deep waters around Antarctica has turned up hundreds of new species and a lot more variety than explorers had expected.

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  4. Earth

    Biological Hot Spots: Ocean eddies may not always lock away carbon

    The carbon in the tissues of organisms that bloom inside some ocean eddies doesn't always sink to the ocean floor to be locked away in sediments when those organisms die.