Uncategorized

  1. Animals

    Built for Blurs: Jellyfish have great eyes that can’t focus

    Eight of a box jellyfish's eyes have superb lenses, but their structure prevents them from focusing sharply.

    By Susan Milius
  2. Health & Medicine

    Proteins’ Promise: New test could reveal early ovarian cancer

    A screening test for ovarian cancer shows promise in preliminary trials.

    By Nathan Seppa
  3. Physics

    Galactic data shore up a constant

    Alpha, a constant of nature found to vary in some astrophysical studies, actually holds steady, according to the first survey of galaxies used to evaluate alpha's constancy.

    By Peter Weiss
  4. Physics

    Scales tilt against five-quark particles

    Studies that fail to find purported five-quark particles, or pentaquarks, are stacking up quicker than studies that claim to have found such particles, suggesting that they might not really exist.