American and British universities still highest ranked. The Massachusetts Institute of Technology (United States) remains the top university in 2015 in the annual QS World University Rankings. It is followed by Harvard (United States), which was fourth in the 2014 rankings, and, in equal third position, by Cambridge University (United Kingdom) and Stanford (United States), which were placed second and seventh respectively in 2014. Five of the top ten places are held by American universities...