News

  1. Climate

    Forecast: Gullywashers

    Climate simulations are underestimating how often intense rainstorms occur at warm temperatures, a hint that episodes of extremely strong precipitation and flooding will strike more often as the global average temperature rises.

    By Sid Perkins
  2. 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
  3. 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
  4. Humans

    Neandertal mitochondrial DNA deciphered

    Researchers have completed a mitochondrial genome sequence from a Neandertal.