Uncategorized

  1. Chemistry

    Fingerprints go high-tech

    A new chemical technique shows promise in identifying traces of explosives, illicit drugs and perhaps even signs of disease.

    By Davide Castelvecchi
  2. Life

    Making T cells tougher against HIV

    Delivering small interfering RNAs, or siRNAs, to human immune cells in mice protects the cells from HIV and suggests future therapy for patients.

    By Patrick Barry
  3. Humans

    Neandertal mitochondrial DNA deciphered

    Researchers have completed a mitochondrial genome sequence from a Neandertal. DNA taken from a 38,000-year-old bone indicates that humans and Neandertals diverged 660,000 years ago and are distinct groups.

    By Tina Hesman Saey
  4. Physics

    Carbon tubes, but not nano

    Trying to grow better, longer nanotubes, researchers accidentally discover a new type of carbon filament, colossal carbon tubes, which are tens of thousands of times thicker.