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  1. Friend or Foe? Old Elephants Know

    Older female elephants are far better at telling friends from strangers than are younger matriarchs.

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  2. Radioactive antibodies on the mind

    Injecting radioactive antibodies directly into the cavity left after a brain tumor is surgically removed lengthened patients' lives by as much as 40 weeks in a recent study.

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  3. Knotty DNA offers cancer-drug target

    Agents that bind to knots in the normally linear DNA sequence seem to prevent the expression of cancer-causing genes.

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  4. Paleontology

    Rocks yield clues to flower origins

    A distinctive organic chemical related to substances produced by modern flowering plants has been found in ancient fossil-bearing sediments, possibly helping to identify the ancestral plants that gave rise to flowers.

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  5. Paleontology

    Fake fossil not one but two new species

    A supposed missing link between dinosaurs and birds that was first unveiled in 1999, and revealed to be a forgery soon thereafter, was actually cobbled together from parts of animals from two new species.

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  6. Anticancer mineral works best in food

    Selenium's anticancer benefits may depend on ingestion of the mineral in food, not as a purified dietary supplement.

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  7. Keeping antioxidants may spare gut

    Inflammatory bowel disease may initially be triggered by chemical reactions that deplete affected tissues of a key antioxidant.

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  8. Pulling antioxidants starves cancers

    Realizing that many cancers depend on antioxidants for their survival, researchers have successfully designed a dietary strategy that suppresses breast cancer growth and spread, at least in animals.

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  9. Cigarette smoke worsens heart attacks

    Breathing in smoke from another person's cigarette causes blood changes that reduce the likelihood that an individual will survive a heart attack.

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  10. 18928

    I’ve often wondered about packing circles and have always assumed that it would get into messy numbers very quickly. Your article is a charming revelation. It says that if a, b, and c are integers, d will be one, too. I think this is true only if a, b, and c bear some relationship to […]

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  11. Math

    Circle Game

    Packing circles within a circle turns a mathematical surprise.

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  12. From the April 18, 1931, issue

    STABILIZER REDUCES ROLLING ON ROUGHEST SEAS Even during the stormiest weather there should be no sea-sick passengers on the vessel that will carry in her hold the 120-ton gyro-stabilizer pictured on the front cover of this weeks SCIENCE NEWS LETTER. The photograph shows the stabilizer on test in the South Philadelphia Works of the Westinghouse […]

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