Uncategorized

  1. Paleontology

    Did Mammals Spread from Asia? Carbon blip gives clue to animals’ Eden

    A new dating of Chinese fossils buttresses the idea than an Asian Eden gave rise to at least one of the groups of mammal species that appeared in North America some 55 million years ago.

    By Susan Milius
  2. Health & Medicine

    Clever Combo: Hybrid vaccine prevents West Nile virus in mice

    A vaccine fashioned from pieces of dengue virus and West Nile virus protects mice against West Nile fever, suggesting it might work in people.

    By Nathan Seppa
  3. Health & Medicine

    Troubled Hearts: Antibiotic might fend off second attack

    An antibiotic might protect people with heart disease from future coronary events, according to the results of a small-scale trial.