Nobel Laureate and US President Barack Obama, in a historic visit to the MIT campus, praised the Institute's commitment to energy research and issued a strong call for the nation to lead the world in the development of new, efficient and clean energy technologies. 

Harvard University, U.S., has retained its top position in 2009, while Cambridge University, U.K., has moved up from third to second position. Yale University of the U.S. has slipped one position to third in the list dominated by US and UK universities.