Vol. 163 No. #20

More Stories from the May 17, 2003 issue

  1. Astronomy

    Supernovas, gamma-ray bursts: Two of a kind?

    Astronomers have uncovered direct evidence that gamma-ray bursts are linked to supernovas.

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  2. Health & Medicine

    Fecal glow could improve meat safety

    Workers who process animal carcasses into meat might soon use a novel type of laser scanner to identify products that have been contaminated with feces.

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  3. Paleontology

    Ancient wood points to arctic greenhouse

    Chemical analyses of wood that grew in an ancient arctic forest suggest that the air there once was about twice as humid as it is now.

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  4. Astronomy

    A black hole that goes the distance

    Astronomers have measured the mass of the most distant black hole known.

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  5. Chemistry

    Drug smugglers leave cellular tracks

    Imaging reveals where some experimental nanoscale capsules ferry drugs when they enter cells.

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  6. Health & Medicine

    Boosting the TB vaccine

    A new vaccine for tuberculosis outperforms the current one in tests on animals.

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  7. Materials Science

    Zeolites get an organic makeover

    Scientists can now incorporate organic groups into the framework of zeolites, a kind of inorganic crystal.

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  8. Humans

    Sea burial for Canada’s cod fisheries

    The Canadian government has declared an end to cod fishing in nearly all of the country’s Atlantic waters.

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  9. Anthropology

    Stone Age Genetics: Ancient DNA enters humanity’s heritage

    Genetic material extracted from the bones of European Stone Age Homo sapiens, sometimes called Cro-Magnons, bolsters the theory that people evolved independently of Neandertals.

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  10. Earth

    Going Down? Probe could ride to Earth’s core in a mass of molten iron

    A geophysicist suggests that scientists could explore Earth's inner structure by sending a grapefruit-size probe on a week-long mission to the Earth's core inside a crust-busting mass of molten iron.

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  11. Tech

    Columbia Disaster Working Hypothesis: Wing hit by debris

    The independent board investigating the breakup of the space shuttle presented its first detailed account of what might have caused the Feb. 1 disaster.

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  12. Gypsy Secret: Children of sea see clearly underwater

    Children who regularly dive to collect food have better-than-normal underwater vision because their eyes adapt to the liquid environment.

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  13. Materials Science

    Melt-Resistant Metals: Carbon coating keeps atoms in order

    Shrink-wrapped in carbon, nanoscale metal chunks melt at extraordinarily high temperatures, suggesting carbon coatings as a route to higher heat resistance for materials and devices.

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  14. Health & Medicine

    Bone Builder: New drug could heal hard-to-mend fractures

    A synthetic compound can heal broken bones that are so damaged they don't knit on their own, a study in rats and dogs shows.

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  15. Chemistry

    Diamond in the rough

    Researchers have found a collection of previously undiscovered diamondlike compounds in oil.

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  16. Troubling Treat: Guam mystery disease from bat entrée?

    A famous unsolved medical puzzle of why a neurological disease spiked on Guam may hinge on the local tradition of serving boiled bat.

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  17. Chemistry

    Plastic Electric

    Scientists are finding new ways to improve the molecular order and electrical conductivity of a commercially important conducting plastic.

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  18. Earth

    Patterns from Nowhere

    Scientists are developing geophysical models that may explain the polygonal patterns that appear in and on the ground in remote regions of the Arctic, Antarctica, and possibly the surface of Mars.

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