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  1. Astronomy

    Disks of Dust: Planet-stuff surrounds other sunlike stars

    Two orbiting observatories for the first time are homing in on planetary debris circling sunlike stars.

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  2. Cloning Milestone: Monkey embryos urged to stem cell stage

    Researchers have coaxed cloned rhesus macaque embryos to grow to the blastocyst stage, the furthest point yet reached in cloning a nonhuman primate.

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  3. Archaeology

    China’s Fermented Past: Pottery yields signs of oldest known wine

    Analyses of ancient pottery have yielded evidence the people living in northern China 9,000 years ago concocted a fermented, winelike drink from rice, honey, and fruit.

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  4. Mice smell a mate’s immune system

    By sniffing molecules present in urine, mice gain insight into each other's immune systems.