Each talk has 15 minutes and is conducted by leaders and visionaries in various fields. Thus, it’s important to look at the best TED talks of all-time. But first, some background.

Add to that viral mix soul-stirring speeches about education, inspiration, and revelation, and you have the stuff of the most-watched TED speeches of all time, the cream of the presentation crop ...

5 Mind-Blowing Lessons From the Most Popular TED Talks of All Time The 20 most popular TED talks ever are likely to make you question just about everything.