Ancient noisemakers unearthed in Mexico's ruins were once dismissed by museums as toys. But modern-day researchers are using them to discover the complex role that sound played in Pre-Columbian society.
Scientists prove that beta-caryophyllene, a chemical found in marijuana, soothes the immune system, increases bone mass, and blocks pain signals -- without causing euphoria or interfering with the central nervous system.
If the cliffhanger of Saturday's episode of Doctor Who is legitimate and not some clever, alternative universe, time-traveling trick, Russell T. Davies and his Who crew pulled off one of the truly great swerves in television history.