The 20 most popular TED Talks, as of this moment
“As 2013 draws to a close, TED is deeply humbled to have posted 1600+ talks, each representing an idea worth spreading. So which ideas have had the most widespread impact? Below, a look at the 20 most-watched talks as of December 2013. These viewership numbers include all the platforms we track: TED.com, YouTube, iTunes, embed and download, Hulu and more.”