Uncategorized

  1. Paleontology

    Fossil confirms that early arthropods molted

    A 505-million-year-old fossil provides hard proof of that ancient arthropods shed their exoskeletons during growth, just as their modern relatives do.

    By Sid Perkins
  2. Tech

    Diagnostic gadget mixes and matches all in one

    Researchers have fabricated a miniature diagnostic lab that can detect disease-linked genes in a small sample of whole blood.

    By Alexandra Goho
  3. Humans

    Plan B ruling is prescription for controversy

    Contravening a recent recommendation from one of its advisory panels, the Food and Drug Administration denied an application to make the emergency contraceptive known as Plan B available without a doctor's prescription.

    By Ben Harder
  4. Health & Medicine

    Nanoparticles could mark spots for surgery

    A new molecule studded with magnetically active ions may soon help surgeons extract, with minimal cutting, lymph nodes likely to harbor cancer.