Vol. 165 No. #10

More Stories from the March 6, 2004 issue

  1. Keeping abreast of serotonin’s roles

    Serotonin, a chemical typically associated with the brain, also controls milk production in mammary glands.

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  2. Astronomy

    Pulsar pas de deux

    Astronomers have for the first time discovered two pulsars orbiting each other, offering the chance for new precision tests of Einstein's theory of general relativity.

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  3. Health & Medicine

    Gene transfer puts good fats in mammals

    Scientists have used a worm gene to genetically engineer mice whose tissues are unusually rich in the heart-healthy fats found mainly in fish.

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  4. Health & Medicine

    Quantum sentinels

    Quantum physics may soon help physicians track whether a cancer has spread.

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  5. Tech

    Silicon goes optical

    The advent of a fast, light-manipulating microdevice made from silicon suggests that speedy optical-fiber links now too expensive for broad use in businesses and homes may soon become widespread.

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  6. Chemistry

    Clean hydrogen fuel from corn?

    A new reactor can convert ethanol from corn into hydrogen fuel with enough efficiency to make the process economical.

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  7. Planetary Science

    Red Planet Makes a Splash: Rover finds gush of evidence for past water

    A robotic rover on Mars has gathered what scientists are calling the best evidence to date that liquid water once flowed on the Red Planet.

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  8. Sunny Solution: Lotion speeds DNA repair, protects mice from skin cancer

    Snippets of DNA that activate a cell's DNA repair process may protect mice from skin cancer caused by ultraviolet radiation.

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  9. Animals

    Jungle Genes: First bird genome is decoded

    Researchers have unveiled a draft of the first bird genome to be sequenced, a vintage chicken.

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  10. Anthropology

    Early Ancestors Come Together: Humanity’s roots may lie in single, diverse genus

    Newly discovered fossil teeth in eastern Africa that are more than 5 million years old suggest that the earliest members of the human family evolved as a single, anatomically diverse genus.

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  11. Physics

    Bubble Fusion: Once-maligned claim rebounds

    Researchers who reported 2 years ago that they created nuclear-fusion reactions inside bubbles imploding in a vat of liquid acetone have now bolstered their controversial claim with new evidence.

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  12. Worst of Two Worlds: Hybrid mosquitoes spread West Nile virus

    Interbreeding between two Old World mosquito species may explain why their blood-sucking brethren in the United States transmit West Nile virus to people as readily as they do.

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  13. Earth

    Lowering the Boom? Impact crater may predate extinction of the dinosaurs

    Analyses of sediments from the Yucatán in Mexico suggest that an extraterrestrial impact there more than 65 million years ago actually happened about 300,000 years before mass extinctions of dinosaurs occurred.

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  14. Earth

    Killer Waves

    Scientists are using sophisticated computer models, field studies of coastal geology, and data from tidal gauges to assess the tsunami risk for coastal residents.

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  15. Tech

    Body Builders

    By growing stem cells on three- dimensional polymer scaffolds, tissue engineers hope to mimic natural tissue development and ultimately produce replacement body parts.

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  16. Humans

    Letters from the March 6, 2004, issue of Science News

    All we have to fear In “9/11’s Fatal Road Toll: Terror attacks presaged rise in U.S. car deaths” (SN: 1/17/04, p. 37: 9/11’s Fatal Road Toll: Terror attacks presaged rise in U.S. car deaths), it was assumed that people who switched from planes to cars after the terrorist attacks did so because of fear. However, […]

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