News

  1. Anthropology

    Script Delivery: New World writing takes disputed turn

    Researchers announced, to considerable controversy, that inscriptions found on artifacts at an Olmec site in southeastern Mexico represented the earliest known writing system in the Americas.

    By Bruce Bower
  2. Health & Medicine

    Keeping the beat

    Muscle cells taken from embryonic rats and put into an adult rat's heart can transmit the electric signals that govern the heartbeat.

    By Damaris Christensen
  3. Tech

    Robotic heart surgery

    By using robotic rather than conventional open-heart techniques, doctors can perform heart surgery with smaller incisions, giving patients less pain and speeding recovery.

    By Damaris Christensen
  4. Health & Medicine

    Cycling and surgery have similar effect

    Among people with chest pain because of clogged heart arteries, regular exercise on a stationary bike reduced symptoms better than surgery did.