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  1. 19152

    It’s not surprising that training may enhance intellect in the elderly. What would be remarkable would be for the elderly to be completely incapable of learning. The real question is whether cognitive training works against whatever causes cognitive decline in the elderly or whether it merely boosts base-level ability. The former would be indicated only […]

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  2. Thoughtful Lessons: Training may enhance intellect in elderly

    The largest study of its kind finds that a brief training course in memory, reasoning, or visual concentration boosts performance on laboratory tests of these cognitive skills among physically healthy elderly people.

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  3. Earth

    Shaked Alaska: A sleepy fault wakes and reveals new links

    One of the most powerful earthquakes ever recorded on U.S. land shook south-central Alaska on Nov. 3, revealing activity along the Denali fault.

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  4. Physics

    Speedy impacts send microwave distress calls

    Laboratory smash-ups mimicking those between fast-moving space debris and satellites appear to emit microwave bursts, suggesting that microwave detectors might someday prove useful for monitoring the health of spacecraft.

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  5. Animals

    Tadpoles kill by supersuction

    A high-speed video shows tiny African tadpoles that catch their prey in a manner unlike that used by any other frog larvae: by shooting out a tubular mouth for superfast suction.

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  6. Health & Medicine

    Immune protein may stall HIV

    People who have HIV but don't progress to AIDS make extra perforin, a protein that helps kill infected cells.

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  7. Planetary Science

    Europa’s freckles

    Reddish spots and shallow pits that pepper the surface of Jupiter's moon Europa may mark regions where warmer and less dense ice percolates to the surface.

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  8. Planetary Science

    Another moon for Uranus

    Astronomers have confirmed the existence of the 21st moon known to be orbiting Uranus.

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  9. Health & Medicine

    Duct tape sticks it to warts

    Treating a wart with a covering of duct tape seems to be more effective—and less painful—than removing the wart by freezing it with liquid nitrogen.

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  10. Tech

    Hot Flashes, Cold Cuts

    By obliterating matter in a never-before-seen way, a new breed of lasers cuts everything from eyeballs to diamonds with unprecedented precision.

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  11. Sizing Up the Brain

    Genetic mutations that produce small brains provide insight into the formation and evolution of the human brain.

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  12. Humans

    From the May 24, 1930, issue

    GRASSHOPPERS THREATEN UNITED STATES Grasshoppers threaten to wreak heavy damage to grain and forage crops in Montana and the Dakotas this year. There were many hoppers in these states, and in parts of Texas, last year, and the eggs they laid are now hatching in large numbers. If climatic and other conditions favor the growth […]

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