Uncategorized

  1. Health & Medicine

    UV Blocker: Lotion yields protective tan in fair-skinned mice

    A lotion that stimulates production of the skin pigment melanin induces a deep tan in specially bred laboratory mice.

    By Nathan Seppa
  2. Astronomy

    Enigmatic Eruptions: Gamma-ray bursts lack supernova fireworks

    The most powerful bursts in the universe may have gotten more mysterious.

    By Ron Cowen

  3. 19732

    This article states that gamma-ray bursts are “a million trillion times as bright as the sun.” The sun is so bright that humans can’t look directly at it from 93 million miles away. How can we possibly wrap our minds around something a million trillion times brighter? Astronomy is great. Donald KaufmannPhiladelphia, Pa.