News

  1. Anthropology

    Sail Away: Tools reveal extent of ancient Polynesian trips

    Rock from Hawaii was fashioned into a stone tool found in Polynesian islands more than 4,000 kilometers to the south, indicating that canoeists made the sea journey around 1,000 years ago.

    By Bruce Bower
  2. Health & Medicine

    Lack of Evidence: Vaccine additive not linked to developmental problems

    Thimerosal, a mercury-containing vaccine preservative, shows no signs of causing memory, attention or other problems in children.

    By Brian Vastag

  3. Bugs in Space: Genes explain why salmonella grow deadlier when freed from Earth’s gravity

    Bacteria that flew on a space shuttle became deadlier than their earthbound counterparts.

    By Sarah Williams

  4. Double Trouble: Tumors have two-pronged defense

    By depleting an essential amino acid and releasing a toxin, cancer cells can ward off attack by the immune system.