Uncategorized

  1. 19656

    This article states that the early universe expanded “from subatomic scales to the size of a grapefruit in less than a trillionth of a second” or one picosecond. This would correspond to a velocity many times the speed of light (light only travels about 0.012 inch in a picosecond). How can this statement be reconciled […]

    By Science News
  2. Earth

    Manufacturers agree to phase out nonstick chemical

    Complying with a request from the Environmental Protection Agency, the companies that make the likely carcinogen perfluorooctanoic acid (PFOA) have agreed to phase out its release worldwide by 2015.

    By Ben Harder
  3. Anthropology

    Evolution persisted in agricultural era

    Natural selection has continued to propagate survival-enhancing gene variants in human populations over the past 10,000 years, according to a new genetic analysis.