News

  1. Earth

    When a Shot Is Not: PCBs may impair vaccine-induced immunity

    Exposure to certain pollutants early in life may do lasting harm to the immune system by blocking its response to vaccinations.

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  2. Moss Express: Insects and mites tote mosses’ sperm

    A lab test has shown that mosses have their own version animal-courier system for sperm that's similar to pollination.

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  3. Tech

    Wheel of Life: Bacteria provide horsepower for tiny motor

    Crawling bacteria can power a micromotor.

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  4. Engineering a Cure: Genetically modified cells fight cancer

    By inserting a gene into normal immune cells isolated from melanoma patients, scientists have turned the cells into cancer fighters.

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  5. Animals

    Flea treatment shows downside of social life

    The flealike parasites that build up in a shared burrow take an unexpectedly large toll on the ground squirrel's reproductive success.

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  6. Is a Galápagos finch caught in a split?

    An inland population of one of the famed Galápagos finches may become a new textbook example of the way in which two species emerge from one while still living together.

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  7. Animals

    How do female lemurs get so tough?

    Female ring-tailed lemurs may get masculinized by well-timed little rises of prenatal hormones.

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  8. Animals

    Female moths join pheromone choruses

    Female rattlebox moths can detect each other's male-luring pheromones and tend to gather in what may be a scent version of male frogs' chorusing around the pond.

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  9. Drug could be depression buster

    Preliminary evidence indicates that a single dose of a drug called ketamine rapidly quells symptoms of major depression for up to 1 week in patients who don't benefit from standard antidepressant medications.

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  10. Sperm in frozen animals still viable years later

    Sperm stored inside frozen organs or whole animals can produce healthy offspring years later.

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  11. Astronomy

    Spiral galaxy in the young universe

    Astronomers have identified a galaxy that had already begun to resemble the modern Milky Way when the universe was only 3 billion years old, one-fifth of its current age.

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  12. Anthropology

    Chimps spread out their tools

    Chimpanzees use stones to crack nuts in an African region far from where that behavior was thought to be relegated.

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