University of California, San Diego Professor Roger Tsien, Ph.D., will share the 2008 Nobel Prize in Chemistry with Osamu Shimomura of the Marine Biological Laboratory in Woods Hole and Boston University School of Medicine, and Martin Chalfie of Columbia University in New York. The scientists are being honored for the discovery of Green Flourescent Protein (GFP) and seminal work to design and create fluorescent molecules that enter cells and light up their inner workings.