CAMBRIDGE (AP) - A Harvard professor is one of three U.S.-based scientists to share this year's Nobel Prize in chemistry.
Martin Karplus was asleep at home in Cambridge when he got the call from the Nobel judges around 5 a.m. Wednesday.
The 83-year-old emeritus professor was worried something bad might have happened to his daughter, who lives in Israel. It took a few minutes to realize the call was good news from Sweden.
Karplus and the others won for developing powerful computer models that researchers use to understand complex chemical interactions and create new drugs. Their work was done in the 1970s.
Karplus splits his time between Harvard and the University of Strasbourg, France.
He says the prize shows the world has accepted techniques he and the others developed as part of something worthwhile.