US Jack W. Szostak, (L) of Harvard Medic

US Jack W. Szostak, (L) of Harvard Medical School smiles as he receives the Nobel Prize in Medicine from King Carl XVI Gustaf of Sweden during the Nobel prize award ceremony at the Stockholm Concert Hall in Stockholm, on December 10, 2009. Szostak shares the Nobel prize with Elizabeth Blackburn of the University of California, San Francisco and Carol Greider of Maryland-based Johns Hopkins University. A record five women were awarded Nobels this year -- nearly one-eighth of the 41 awards to female recipients in the 108-year history of the prize. AFP PHOTO / SCANPIX SWEDEN / PONTUS LUNDAHL / POOL (Photo credit should read PONTUS LUNDAHL/AFP via Getty Images)