Biological clock discoveries by 3 Americans earn Nobel prize

STOCKHOLM (AP) — Three Americans won the Nobel Prize in Physiology or Medicine on Monday for their discoveries about the body’s biological clock, opening up whole new fields of research and raising awareness about the importance of getting enough sleep.
Jeffrey C. Hall, Michael Rosbash and Michael W. Young won the 9-million-kronor ($1.1 million) prize for their work on finding genetic mechanisms behind circadian rhythms, which adapt the workings of the body to different phases of the