Khan Academy Update: A Tsunami of Learning Online

H/T News Alert
Since we last looked at Khan Academy, the free online learning site has expanded from math, physics, finance, and banking, into history, biology, chemistry, and brain teasers.

The over 1200 learning videos are hosted on YouTube, available free, 24 hours a day.

Salman Khan has retired from his financial job to devote his full time to expanding the amazing learning universe of Khan Academy. Khan does not receive financial remuneration for his prodigious work. Instead, he takes satisfaction in helping to explain math, science, finance, and many other topics to tens of thousands of students every day.