TED Talks Top One Billion Views; Bill Gates Reveals His Favorites

Microsoft founder and philanthropist Bill Gates is a big proponent of vaccines, but he’s also a sucker for highly infectious ideas, like the ones that spread rapidly thanks to the viral envelope known as the TED Talk. Gates is not alone. Today comes word that the TED Talks posted online have topped one billion views–every 17 seconds, a new person around the world begins watching one of the 1,400 or so videos, according to TED HQ.