Vol. 171 No. #20
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More Stories from the May 19, 2007 issue

  1. Plants

    Tiny pool protects flower buds

    A rare structure on flowers, tiny cups that keep buds underwater until they bloom, can protect the buds from marauding moths.

  2. Physics

    Broadband vision

    Cells that act like optical fibers could explain why vertebrate retinas have sharp vision despite being mounted backwards.

  3. Health & Medicine

    Therapeutic sorghum?

    Sorghum's inflammation-fighting activity is comparable to that of a prescription arthritis medicine, animal research indicates.

  4. Health & Medicine

    Embryos, please

    Almost half of Spanish couples who were asked recently to donate excess embryos for stem cell research did so.

  5. Earth

    Emissions tied to global warming are on the rise

    The United States emitted nearly 1 percent more greenhouse gases in 2005 than it did in the year before.

  6. Health & Medicine

    Slimming on oolong

    Rats absorb less dietary fat and gain less weight when their diets contain lots of oolong tea.

  7. Alzheimer’s clues from thin brains

    Children and teens who possess a gene variant linked to Alzheimer's disease have substantially thinner neural tissue in a key brain structure than their peers do.

  8. Animals

    Face it: Termites are roaches

    Termites are just cockroaches with a fancy social life.

  9. Health & Medicine

    X-Ray Kin: Radiation risk is hereditary

    Susceptibility to radiation-induced tumors runs in families.

  10. Earth

    Biological Hot Spots: Ocean eddies may not always lock away carbon

    The carbon in the tissues of organisms that bloom inside some ocean eddies doesn't always sink to the ocean floor to be locked away in sediments when those organisms die.

  11. Animals

    Low Life: Cold, polar ocean looks surprisingly rich

    The first survey of life in deep waters around Antarctica has turned up hundreds of new species and a lot more variety than explorers had expected.

  12. Planetary Science

    Water World: Extrasolar planet is loaded with hot ice

    Astronomers have found a Neptune-size planet outside the solar system that's composed mainly of water solidified under high pressure.

  13. Fly Moves: Insects buzz about in organized abandon

    Fruit flies display a penchant for spontaneous behavior that represents an evolutionary building block of voluntary choice, also known as free will, a controversial study suggests.

  14. Another Layer of Complexity: Short lengths of RNA could provide new form of genetic control

    Researchers have discovered a new way that so-called junk DNA could help regulate gene activity.

  15. Chemistry

    Cleaning Treasures: Safer solvents for restoring frescoes

    Solvents in nanoscale droplets can be used to clean centuries-old frescoes, saving them from the unintended consequences of previous restorations.

  16. Our Microbes, Ourselves

    Trillions of microbes live in the human gut and skin, and they may be essential to health.

  17. Physics

    Spinning into Control

    High-speed flywheels could replace batteries in hybrid vehicles and help make the electrical grid more reliable.

  18. Humans

    Letters from the May 19, 2007, issue of Science News

    Merry go round When considering a spin rate of 1,122 revolutions per second, has anyone determined the diameter of the neutron star XTE J1739-285 (“Dance of the dead,” SN: 3/17/07, p. 173)? If, for example, it were the same diameter as Earth, it would be traveling far in excess of the speed of light at […]