Vol. 157 No. #1

More Stories from the January 1, 2000 issue

  1. Physics

    Computers Crunch Quantum Collisions

    Physicists have mathematically described what happens when an electron collides with a hydrogen atom, accomplishing a longstanding goal.

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  2. Earth

    Smoggy Asian air enters United States

    High concentrations of ozone from Asia reach the United States.

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  3. Mom’s eggs execute Dad’s mitochondria

    Sperm may tag their own mitochondria for destruction inside the fertilized egg.

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  4. Chemistry

    Antibiotics may become harder to resist

    Drug designers have developed new tactics to make it harder for bacteria to survive exposure to antibiotics.

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  5. Physics

    Time’s arrow may make U-turns in universe

    Time may run backwards for isolated chunks of matter in our universe and that reversed state could be probed gently from the forward-going realm without disturbing the time arrow.

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  6. Health & Medicine

    Stem cells repair rat spinal cord damage

    Using embryonic stem cells from mice, researchers restored some movement in paralyzed rats that had undergone a crippling spinal injury.

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  7. Animals

    Male bats primp daily for odor display

    For the first time, scientists have described the daily routine of male sac-winged bats gathering to freshen the odor pouches on their wings.

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  8. Earth

    Corals keep eruption record

    Dust from a giant eruption is lodged within Florida coral.

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  9. Earth

    Taking a mountain’s measure

    A survey of Mount Everest alters its official elevation to 29,035 feet.

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  10. Earth

    Wretched weather sealed explorer’s fate

    Unusually low temperatures hindered Robert Falcon Scott's polar expedition in 1912.

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  11. Antioxidants may help cancers thrive

    By curbing a natural process that rids the body of damage, antioxidant vitamins can aid cancer growth.

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  12. Health & Medicine

    The brew for a slimmer you

    Green tea contains a compound that triggers the body to burn more fat.

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  13. Materials Science

    Small-scale glues stick to surfaces

    Tailored molecular glues can connect together tiny particles for nanotechnology applications.

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  14. Materials Science

    Impurity clouds from all sides now

    For the first time, scientists have obtained detailed, three-dimensional images of line defects in steel.

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  15. Physics

    Matter waves: Be fruitful and multiply

    For the first time, physicists induced atoms to amplify a selected matter wave in a manner analogous to a cascade of photons amplifying the characteristic electromagnetic wave of an optical laser.

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  16. Humans

    An Artist’s Timely Riddles

    A team of researchers demonstrates that there may be much more to the art of Marcel Duchamp than meets the casual, or even critical, eye.

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  17. Chemistry

    The World of Wine

    Improved analytical instruments and powerful computers are now enabling scientists to better determine a chemical fingerprint for products from different wine-producing regions.

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