Caltech in First PlaceThe big news of the 2011 THE - TR rankings is that Caltech has replaced Harvard as the world's top university. So how exactly did they do it?According to the Times Higher iPad apps for this year and last (easily downloadable from the rankings page), Harvard's total score fell from 96.1 to 93.9 and Caltech's from 96.0 to 94.8, turning a 0.1 Harvard lead into one of 0.9 for