Vol. 161 No. #23
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More Stories from the June 8, 2002 issue

  1. Earth

    Most oil enters sea from nonaccidents

    Nearly all of the oil entering the marine environment traces not to accidents but to natural seeps and human activities where releases are intentional.

  2. Environment

    Old thermometers pose new problems

    Though health groups advocate getting mercury thermometers out of the home, obtaining sound advice on how to dispose of the thermometers can be problematic.

  3. Health & Medicine

    Learning from leprosy’s nerve damage

    The bacterium that causes leprosy directly damages a protective sheathing around many nerve cells.

  4. Health & Medicine

    Arthritis drug fights Crohn’s disease

    The inflammation-fighting drug infliximab can hold off the painful symptoms of Crohn's disease for as long as a year in many patients.

  5. Health & Medicine

    Dieting woes tied to hunger hormone

    A rise in the appetite-enhancing hormone ghrelin after weight loss may explain why dieters regain pounds.

  6. Planetary Science

    Odyssey’s Homer: Hints of water near both poles of Mars

    Sensors on board the Mars Odyssey spacecraft have spied strong signs of ice buried near both poles of the Red Planet, exactly the regions where scientists previously had said that such frozen water deposits could exist.

  7. Wayward Moods: Bipolar kids travel tough road to teenhood

    Children diagnosed with bipolar disorder, a psychiatric ailment characterized by severe mood swings, exhibit a depressingly poor response to standard drug treatments and psychotherapy.

  8. Astronomy

    Rare Find: Odd type of ammonia detected in space

    The discovery of deuterated ammonia in space could help astronomers better understand the complex chemistry of dark clouds in star-forming regions.

  9. Health & Medicine

    Transplant Triumph: Cloned cow kidneys thrive for months

    Cow kidneys and other tissue made by cloning ward off immune rejection after transplantation into cows.

  10. Ecosystems

    Plight of the Iguanas: Hidden die-off followed Galápagos spill

    Residues of oil spilled in the Galapágos Islands in January 2001 may have caused a 60 percent decline in one island's colony of marine iguanas.

  11. Health & Medicine

    Efficient Germ: Human body boosts power of cholera microbe

    Some genes in the cholera-causing bacterium Vibrio cholerae are activated and others are silenced when the microbe passes through the human gut, changes that make the bacterium more virulent.

  12. Astronomy

    Seeing Red: A cool revival of Hubble’s infrared camera

    New images provide a graphic demonstration that the Hubble Space Telescope's infrared vision has been restored.

  13. Bacterial genes and cell scaffolding

    A bacterium may have revealed the origin of a key cell structure.

  14. Ironing out underarm odor

    Chemicals that deprive bacteria of iron may improve deodorants.

  15. Agriculture

    Moos, microbes, and methane

    A feed additive could reduce methane emissions from cows.

  16. Humans

    Solar series wins award for Science News

    The Solar Physics Division of the American Astronomical Society has given its 2002 popular writing award to Ron Cowen and Sid Perkins for a two-part series on cyclic variations in the sun's activity.

  17. Health & Medicine

    What Activates AIDS?

    New studies suggest that a natural process called immune activation—the signaling that alerts immune cells of foreign invaders—plays a key role in explaining why infection with the human immunodeficiency virus progresses to AIDS more quickly in some people than in others.

  18. Astronomy

    Cosmic Dawn

    New computer simulations suggest that the first stars in the universe were extremely massive and left behind gamma-ray bursts that may already have been detected by telescopes orbiting Earth.