Since debuting short videos to tutor his young cousins on YouTube in 2005, Sal Khan has been lauded as a Most Creative Person in Business, acclaimed by Bill Gates from the stage at TED, and received ...

Continuing its evolution from quirky disruptor of traditional classroom learning to mainstream player aligned with the education establishment, the nonprofit Khan Academy recently unveiled new online ...

Watching videos online usually means goofing off. But over the past few years, millions of decidedly enterprising people have turned on their computers to watch, of all things, math and science ...