News

  1. Anthropology

    Fossil skull spurs identity dispute

    A dispute has broken out over whether a recently discovered, 7-million-year-old fossil skull represents the earliest known member of the human evolutionary family or an ancient ape.

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  2. Earth

    Haze clears on sooty climate conditions

    The results of a new study suggest that soot plays a bigger role in regional climate changes than scientists had previously realized.

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  3. Chicken Rank: Hen social position shifts egg hormones

    A study of leghorn chickens has linked hormone concentrations in a hen's eggs to her rank in the pecking order.

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  4. Health & Medicine

    Making Bone: Novel form of vitamin D builds up rat skeleton

    A newly synthesized form of Vitamin D induces bone-making cells to capture calcium and fortify bone mass in rats, suggesting it might work against osteoporosis in people.