Nobel Prize Winners of 2015

Angus Deaton gestures at a gathering at Princeton University after it was announced that he won the Nobel prize in economics for improving understanding of poverty and how people in poor countries respond to changes in economic policy | AP

Scientist William C. Campbell is one of three scientists from the U.S., Japan and China who won the Nobel Prize in medicine for discovering drugs to fight malaria and other tropical diseases that affect hundreds of millions of people every year | AP

Chinese Nobel Prize winner Tu Youyou is surrounded by flowers from well-wishers as she gives an interview in her apartment in Beijing. Tu, along with scientists from Ireland and Japan, won the 2015 Nobel Prize in medicine for discovering drugs against mal

Kitasato University Prof. Emeritus Satoshi Omura attends a press conference at the university in Tokyo after learning he and two other scientists from Ireland and China won the Nobel Prize in medicine. Tu Youyou was awarded for discovering drugs against m

Aziz Sancar, right, a biochemist at the University of North Carolina, acknowledges applause during a press conference in Chapel Hill, N.C. He shared the Nobel Prize in chemistry with two other men, including one from nearby Duke University | AP

Paul Modrich is one of three scientists who won the Nobel Prize in chemistry on Wednesday for showing how cells repair damaged DNA, work that has inspired the development of new cancer treatments | AP

Sweden's Tomas Lindahl, one of the joint winners of the 2015 Nobel Prize for Chemistry, smiles before a press conference. Sweden's Tomas Lindahl, American Paul Modrich and U.S.-Turkish scientist Aziz Sancar won the Nobel Prize in chemistry on Wednesday

Takaaki Kajita of Japan, director of the Institute for Cosmic Ray Research and professor at the University of Tokyo, speaks after learning he won the Nobel Prize in physics at the university in Tokyo Kajita and Arthur McDonald of Canada won the Nobel Priz

Arthur McDonald, a professor emeritus at Queen's University, poses for a photo at the university in Kingston McDonald and Takaaki Kajita of Japan are co-winners of the 2015 Nobel Prize in Physics. McDonald and Kajita were honored for showing that the par