News

  1. Physics

    Counting cracks in glass gives speed of projectile

    There is a simple relationship between an object's velocity and the number of spokes it leaves in a dinged windshield or fractured windowpane.

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  2. Life

    Genetic fossils betray hepatitis B’s ancient roots

    Modern bird genomes reveal evidence that virus is at least 82 million years old.

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  3. Life

    Bees need honey’s natural pharmaceuticals

    Ingredients trigger insects' genes for detoxification and immune defenses against bacteria.

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  4. Health & Medicine

    Brain measurements predict math progress with tutoring

    The size and connections of a brain structure associated with memory formation predicted learning ability in 8- and 9-year-old children.