News

  1. Health & Medicine

    Disabled Defense: HIV protein counters immune-cell gene

    Immune cells contain a protein that can inhibit HIV replication if the AIDS virus lacks a key protein.

    By John Travis
  2. Paleontology

    Skimming the Surface: Flying reptile may have scooped its meals

    Fossils unearthed in Brazil strengthen the idea that some species of ancient flying reptiles snatched their meals on the fly, snapping up fish as they swooped low over the water's surface.

    By Sid Perkins
  3. Health & Medicine

    Gender differences in weight loss

    Men and women gain weight differently and may lose it differently, too.

    By Damaris Christensen
  4. Health & Medicine

    Antioxidants for greyhounds? Not a good bet

    Antioxidant vitamins that greyhound racers have been giving their animals to boost performance actually slow down the dogs.