Sir Harold W. Kroto, a winner of the 1996 Nobel Prize in Chemistry, gave a lecture on nanoarchitecture in May 2007, in Brussels. "Find something to do where only your best effort will satisfy you," he advised students.
Sebastien Pirlet/AFP/Getty Images
Kroto displays a model of his discovery in 1996: a soccer ball-shape carbon molecule that spawned a new field of study and could act as a tiny cage to transport other chemicals.
The model of a DNA stands on a desk during a press conference to announce the winners of the Nobel Prize in Chemistry 2015 on Wednesday at the Royal Swedish Academy of Sciences in Stockholm. Sweden's Tomas Lindahl, Paul Modrich of the US and Turkish-American Aziz Sancar won the Nobel Chemistry Prize for work on how cells repair damaged DNA.
Jonathan Nackstrand/AFP/Getty Images
The "Super-Kamiokande" neutrino detector operated by the University of Tokyo's Institute for Cosmic Ray Research helped scientist Takaaki Kajita win a share of the Nobel Prize in Physics, along with Canadian Arthur B. McDonald.
French economist Jean Tirole won the Nobel prize for economics Monday for research on market power and regulation in industries dominated by a few powerful companies. The undated photo was provided by the Toulouse School of Economics.