News

  1. Plants

    Lowering lilies on the tree of life

    Water lilies may belong on the lowest branch of the family tree of flowering plants, along with a shrub called Amborella.

    By Susan Milius
  2. Chemistry

    Chemistry Catches Cocaine at Source

    Scientists have devised a method for identifying cocaine's geographical origin by determining the chemical signatures of five distinct coca-growing regions in the Andes.

    By Jessica Gorman
  3. Earth

    New database describes all the marbles

    Analyses of the isotope ratios of carbon and oxygen in hundreds of samples of Greek marble may help researchers identify the quarries that supplied the stone for some of Europe's most famous statues and architecture.

    By Sid Perkins
  4. Health & Medicine

    Gene therapy might keep arteries open

    Tiny steel-mesh tubes coated with a DNA-containing polymer could prevent arteries from becoming reclogged after cardiovascular treatment.