Nobel Winners
Craig C. Mello, right, from the Howard Hughes Medical Institute at the Massachusetts Medical School in Worcester, Mass., and Andrew Z. Fire of the School of Medicine at the Stanford University in California, pose next to a statue of German scientist Paul Ehrlich after being awarded the Paul Ehrlich and Ludwig Darmstaedter award in Frankfurt, Germany. Now the scientists have won the Nobel Prize for physiology or medicine for finding a way to turn off the effect of certain genes.