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Your search has returned 19 articles:
  • News

    Hidden Depths: Antarctic krill startle deep-ocean scientists

    Biologists looked into the abyss and the abyss looked back, with lots of little compound krill eyes.

    The shrimplike Antarctic krill, a major player in polar ecosystems, is supposedly a creature of the upper ocean. Yet the first science cruise to lower a camera to the abyssal seabed of the Southern Ocean off Antarctica found what looked like krill 3,000 meters down, says...

    02/27/2008 - 13:28 Animals
  • News

    Digging that Maya blue

    Before plucking the hearts from humans and tossing the bodies into the sacred cenote, the sacrificial well, the Maya of Chichén Itzá painted their offerings blue—Maya blue. The process for making the unusual pigment, also found on pottery, sculpture, and murals from roughly 400 to 1519, has long puzzled researchers.

    Now an analysis of a 600- to 700-year-old pot (above) found...

    02/27/2008 - 13:15 Anthropology
  • News

    Pinning down malaria's global reach

    Local governments and organizations that fund malaria research need proper maps of its spread to allocate resources effectively, but it has been 40 years since scientists last cobbled together an accurate worldwide view. Using data from more than 4,000 clinical surveys from 2002 to 2006, researchers have now assembled the up-to-date map shown here.

    Red shading identifies...

    02/27/2008 - 12:42 Biomedicine
  • News

    Greener Green Energy: Today's solar cells give more than they take

    Solar power produces, per unit of energy, only about one-tenth as much carbon dioxide and other harmful emissions as does conventional power generation, a new study shows.

    Solar panels don't release harmful gases during use, but making the solar cells does consume materials and energy—mainly from conventional power sources such as coal-fired power plants, which in turn produce emissions...

    02/27/2008 - 12:31 Earth & Environment
  • News

    Drug or No Drug: Placebos may be more than appeasing

    Antidepressant drugs such as Prozac generally fall short of providing significantly more relief to depressed patients than placebo pills do, according to a new analysis of multiple clinical trials obtained from the Food and Drug Administration (FDA).

    Antidepressants substantially outperform placebos only among extremely depressed individuals, says a team led by psychologist Irving...

    02/27/2008 - 11:54
  • News

    Hefty Find: Density has starring role in making stars massive

    From their earliest moments, massive stars play the heavy. As infants, their fierce winds and harsh ultraviolet radiation tear away at the fragile gas clouds in which their lighter-weight cousins are born. Eventually, these behemoths explode, dumping vast amounts of energy into space along with an assortment of heavy elements.

    Yet for all the drama, astronomers aren't quite...

    02/27/2008 - 11:30 Astronomy
  • News

    True Blue: Electron jumps make protein shine like an LED

    A protein known to chemists for its bright blue fluorescence may not be fluorescent after all. Instead, it gives off light by a mechanism similar to that of light-emitting diodes (LEDs), chemists report. The finding suggests that some of the oceans' many bioluminescent animals may have been using the principle behind LEDs for millions of years.

    The protein, antibody EP2-19G2, works in...

    02/27/2008 - 10:34
  • News

    Hairy Forensics: Isotopes can identify the regions where a person may have lived

    Judging people by their hair isn't shallow, it's sound science: The proportions of certain chemical isotopes in someone's tresses can help detectives pin down that individual's region of origin and recent movements, a new study suggests. The finding could be particularly useful in identifying the victims of crimes or mass disasters and in poking holes in the alibis of suspected criminals....

    02/27/2008 - 10:14 Anthropology
  • News

    Great spots for white sharks

    From Boston, at a meeting of the American Association for the Advancement of Science

    Great white sharks, supposedly ravenous nomads scouring the seas for hapless seals and surfers, show serious site fidelity, returning to the same neighborhoods every summer along the California coast.

    Data from more than 100 tagged sharks show that the animals stick to specific routes and...

    02/26/2008 - 19:42 Animals
  • News

    Sun, inflammation speed aging of skin

    From Boston, at a meeting of the American Association for the Advancement of Science

    Sun exposure leads to wrinkles in double time, new research shows.

    Inflammation makes the difference between young, supple skin and aged skin, say researchers at P&G Beauty, a cosmetics company in Cincinnati. Company scientists, led by immunologist Michael Robinson, compared skin from a group...

    02/26/2008 - 19:36 Biomedicine