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Your search has returned 38 articles:
  • 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