Stanford University professor Daphne Koller believes that the next Albert Einstein may be sitting in an African village, without access to college classrooms. Koller also believes that education is a fundamental human right. So she and other pioneering pedagogues are taking university courses into global classrooms online.

Last April, Koller cofounded a free online site called Coursera.org, which offers 213 courses from 33 top universities. At press time it was already reaching more than 2.3 million enrollees (and was growing by about 70,000 per week).