Vol. 171 No. #12
Download PDF Modal Example Archive Issues Modal Example

More Stories from the March 24, 2007 issue

  1. Planetary Science

    Radar reveals signs of seas on Titan

    The northernmost reaches of Saturn's moon Titan appear to be covered with hydrocarbon lakes or seas that are at least 10 times as large as those predicted by earlier studies.

  2. Mental fallout among recent-war veterans

    Almost one in three veterans of military operations in Afghanistan and Iraq receiving medical care at Veterans Affairs facilities displays mental disorders or less-severe problems that still require mental-health treatment.

  3. Novel DNA changes linked to autism

    Genetic alterations that occur in children without being inherited from the parents contribute to certain cases of autism and related developmental disorders.

  4. Health & Medicine

    Preemies respond to immunizations

    Babies born prematurely rev up an immune response to two routine childhood vaccines as well as babies who are born full-term.

  5. Paleontology

    Catching evolution in the act

    Paleontologists have unearthed fossils that provide direct evidence of something scientists had long suspected: The tiny bones in the middle ears of modern-day mammals evolved from bones located at the rear of their reptilian ancestors' jaws.

  6. Health & Medicine

    Hepatitis B found in wrestlers’ sweat

    Traces of hepatitis B have turned up in the perspiration of wrestlers, suggesting that the virus could spread to their opponents and teammates.

  7. Earth

    World’s climate map gets an update

    A century-old system of categorizing the world's climates has been updated to include modern weather data, thereby providing researchers with a tool to better verify results of their computer simulations.

  8. Gene predicts sleepy performance

    Variants in a circadian-rhythm gene predict how well people perform mental tasks when sleep deprived.

  9. Earth

    Young and Restless: Ancient Earth shows moving crust

    The oldest rocks in the world show that Earth's shifting crust began its tectonic movements almost 4 billion years ago.

  10. Chemistry

    Waistline Worry: Common chemicals might boost obesity

    A family of chemicals implicated in testosterone declines may also be contributing to recent spikes in obesity and diabetes.

  11. Physics

    Closer to Vanishing: Bending light as a step toward invisibility cloaks

    Invisibility cloaks may be a long shot, but new optical tricks could help in the design of future computers.

  12. Health & Medicine

    Risky Flames: Firefighter coronaries spike during blazes

    A disproportionate number of heart disease deaths among firefighters occur during blazes.

  13. Health & Medicine

    Balancing Act: Excess steroids during pregnancy may pose risks for offspring

    Heavy amounts of steroids taken during pregnancy can have long-term deleterious effects on offspring, a study of monkeys shows.

  14. Planetary Science

    Solar-staring spacecraft shows its flare

    A new image of the sun's chromosphere, a layer sandwiched between the sun's visible surface and its outer atmosphere, shows a surprisingly complex structure of filaments of roiling gas that promises to shed new light on why the sun erupts.

  15. Not So Wimpy: Antimalarial mosquito has an edge in tests

    For the first time, mosquitoes engineered to resist malaria have shed their underbug image and outperformed regular mosquitoes in a lab test.

  16. Feeling Right from Wrong: Brain’s social emotions steer moral judgments

    A new study of people who suffered damage to a brain area involved in social sentiments supports the notion that emotional, intuitive reactions typically guide decisions about moral dilemmas.

  17. Astronomy

    Ticket to Ride?

    Astronomers are investigating how they might jump on NASA's lunar bandwagon, using the moon or its environs to study distant stars and galaxies.

  18. Anthropology

    Mysterious Migrations

    Controversial new studies report that modern humans from Africa launched cultural advances in Europe at least 36,000 years ago and reached what's now western Russia more than 40,000 years ago.

  19. Humans

    Letters from the March 24, 2007, issue of Science News

    Story panned So we shouldn’t cook food in easily cleanable pots because we might release a little bit of maybe-not-even-toxic chemicals into the food (“Heating releases cookware chemicals,” SN: 1/27/07, p. 61)? Because a common chemical found worldwide is merely suspected of being linked to worldwide rates of exposure? Why are our U.S. companies being […]