Uncategorized

  1. Health & Medicine

    Two cities stopped adding fluoride to water. Science reveals what happened

    As calls to end fluoride in water get louder, changes to the dental health of children in Calgary, Canada, and Juneau, Alaska, may provide a cautionary tale.

    By Alex Viveros
  2. Health & Medicine

    Bird flu in cows shows no signs of adapting to humans — yet

    Easy replication in cattle mammary glands means H5N1 bird flu is under no evolutionary pressure to adapt to spread easily in humans.

    By Tina Hesman Saey
  3. Paleontology

    Ancient, water-loving rhinos gathered in big, hippolike herds

    Squat rhinos lived in North America about 12 million years ago, congregating in huge, water-bound herds much like modern hippos.