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  1. Math

    Catching Flies

    Archerfish and baseball outfielders appear to use different strategies to snag a projectile. Archerfish (Toxotes jaculatrix) are famous for their unusual way of hunting insect prey. Upon spying an insect on a twig or a piece of foliage hanging above the water surface, the fish shoots it down using a strong, accurately aimed jet of […]

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  2. 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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  3. 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.