Over the past decade, the free instructional website Khan Academy has transformed how tens of millions of students across the globe perceive and approach math. Now, it’s pursuing a bigger aim: ...

Khan Academy, one of the first online math teaching pro bono sites, has gained traction both in terms of publicity and fund raising, when Bill Gates, an ardent supporter, talked about the site at TED ...

During the years Salman Khan spent scrutinizing financials for hedge funds, he rationalized the profit-obsessed work by telling himself he would one day quit and use his market winnings to open a free ...