The Khan Academy is all about using video to explain the world. The Khan Academy hopes to empower everyone, everywhere with a free, world-class education. Sal is the Founder, Executive Director, and Faculty of the Khan Academy. He started the Khan Academy as a way to tutor his cousins remotely- while he was a hedge fund analyst in Boston, and they were students in New Orleans. He started posting videos on YouTube, and more and more people kept watching. It was clear there was a huge unmet need, so Sal left his hedge fund job and started Khan Academy with the mission of providing a free world-class education to anyone, anywhere. The Khan Academy has over 1800 videos under topics of Math, Science, Humanities & Other. A fantastic source of information for teachers and students alike.