Uncategorized

  1. Health & Medicine

    Heart disease linked to clotting gene

    African Americans with a mutation in a blood-clotting gene have a sixfold increase in the risk of heart disease, but this is not the case for white Americans with the same mutation.

    By Jessa Netting
  2. Health & Medicine

    Statins’ structure blocks cholesterol

    X-ray crystallography shows that statins impede the build-up of cholesterol by physically blocking the binding site of an enzyme important for cholesterol production.

    By Jessa Netting
  3. Earth

    Nations sign on to persistent-pollutants ban

    The United States joined 126 other nations in signing a treaty to ban or phase out a dozen persistent and toxic pollutants.

    By Janet Raloff
  4. Ecosystems

    Parrot survey finds poaching but also hope

    The largest review yet of wild parrot nesting finds poaching worrisomely frequent but also sees cause for hope in the efects of a U.S.