Khan Academy is a non-profit, education organization that offers free, short instructional videos on a range of topics for students, teachers, and parents. The videos use step-by-step doodles and diagrams to break down complex content, and users also receive "energy points" for completing lessons which convert into special badges and track progress. Khan's videos have been viewed by more than 50 million users worldwide and translated into seven different languages.
See the video below (with over 25,000 views on YouTube) to hear Sal Khan, the founder of Khan Academy, explain public pension plans and how they become underfunded:
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