News

  1. Tech

    Hooking up

    Cleverly designed molecules can self-assemble into networks and stay robustly connected.

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  2. Health & Medicine

    Plugging Leaks: Manipulating receptors may impede sepsis

    Manipulation of signaling proteins on blood vessels may help combat sepsis, an often fatal condition.

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  3. Physics

    Rock, paper, toxins

    A computer model simulates a kind of rock-paper-scissors competition among three species of virtual bacteria.

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  4. Stimulant Inaction: ADHD drug’s mental lift proves surprisingly weak

    A widely used drug often calms children with attention-deficit hyperactivity disorder but does little to alleviate the condition's underlying mental deficits.

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  5. Planetary Science

    Chilled Out? Ice could lurk beneath Martian equator

    An immense volume of ice-rich material may underlie a formation that extends about one-quarter of the way around Mars' equator.

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  6. Earth

    Clay That Kills: Ground yields antibacterial agents

    A special type of French clay smothers a diverse array of bacteria, including antibiotic-resistant strains and a particularly nasty pathogen that causes skin ulcers.

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  7. Extreme Healing: Protein aids limb regrowth in newts

    The ability of newts to regenerate severed limbs depends crucially on a protein released by the insulating sheath around nerves.

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  8. Animals

    Cousin Who? Gliding mammals may be primates’ nearest kin

    Two species of small, little-known rain forest mammals may be primates' closest living relatives.

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  9. Health & Medicine

    Early Arrival: HIV came from Haiti to United States

    New analysis of 25-year-old blood samples indicates that HIV reached the United States in about 1969, 12 years before AIDS was first formally described.

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  10. Paleontology

    Meet the old wolves, same as the new wolves

    The dire wolf, an extinct species preserved in abundance at the La Brea tar pits, seems to have had a social structure similar to that of its modern-day relatives.

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  11. Paleontology

    Dinosaurs matured sexually while still growing

    Distinctive bone tissue in fossils of several dinosaur species suggests that the ancient reptiles became sexually mature long before they gained adult size.

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  12. Paleontology

    Deinonychus’ claws were hookers, not rippers

    The meat-eating dinosaur Deinonychus probably used the large, sicklelike claw on its foot to grip and climb large prey, not disembowel it.

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