News

  1. Physics

    Orbiting relativity test gets slow start

    Unexpected but necessary adjustments to a satelliteborne test of relativity theory have slashed the time available to collect data.

    By Peter Weiss
  2. Tech

    Transmuting a powerful poison

    A new chemical process for fuel cells powered by hydrocarbons eliminates carbon monoxide that would clog fuel-cell electrodes while also extracting energy from the troublesome gas.

    By Peter Weiss
  3. Chemistry

    Bacteria send out molecular scrounger for copper

    Scientists have discovered the organic molecule that bacteria use to take up copper, which the microbes then use to chemically crack methane.

    By Alexandra Goho
  4. Humans

    Rembrandt’s eye saw no depth

    The 17th-century Dutch artist Rembrandt lacked stereoscopic vision, an optical analysis of his self-portraits suggests.