Uncategorized

  1. Health & Medicine

    Natural fluoride isn’t quite enough

    In the absence of a public water-fluoridation program in eastern Germany, natural background concentrations of fluoride in drinking water affect children’s dental health.

    By
  2. Earth

    Child-care sites, health threats

    Federal agencies have completed the first national study of lead, pesticides, and allergens in U.S. child-care facilities.

    By
  3. Animals

    Hawkmoths can still see colors at night

    For the first time, scientists have found detailed evidence than an animal—a hawkmoth—can see color by starlight.

    By
  4. Tech

    Resistancefree wire takes long jump

    A wire-making company has demonstrated a process that yields potentially inexpensive, high-current superconducting wires about 10 times longer than previous prototypes.