Uncategorized

  1. Dark Power: Pigment seems to put radiation to good use

    The pigment melanin may enable certain fungi to convert dangerous radiation into usable energy.

    By Davide Castelvecchi
  2. Earth

    Fish Free Fall: Hormone leads to population decline

    Trace amounts of the synthetic estrogen used in birth control pills can cause a fish population to collapse.

    By Aimee Cunningham
  3. Health & Medicine

    Circadian Fix: Viagra may lessen effects of jet lag

    Sildenafil, the male-impotence drug marketed as Viagra, helps laboratory rodents recovery from circadian disruptions similar to jet lag.

    By Nathan Seppa
  4. Animals

    Virgin Birth: Shark has daughter without a dad

    DNA testing of two sharks confirms an instance of reproduction without mating, adding a fifth major vertebrate lineage to those known for occasional virgin births.