http://www.ted.com TEDTalks shares the best ideas from the TED Conference with the world, for free: trusted voices and convention-breaking mavericks, icons and geniuses, all giving the talk of their lives in 18 minutes. We post a fresh TEDTalk every weekday. TEDTalks are licensed under Creative Commons, so you're welcome to link to or embed these videos, forward them to others and share these ideas with the people you know. To join the conversation, comment here or join our online community at TED.com. Any questions? Email contact@ted.com.

TED-Ed’s commitment to creating lessons worth sharing is an extension of TED’s mission of spreading great ideas. Within TED-Ed’s growing library of TED-Ed animations, you will find carefully curated educational videos, many of which represent collaborations between talented educators and animators nominated through the TED-Ed website (ed.ted.com).  

Want to suggest an idea for a TED-Ed animation or get involved with TED-Ed? Visit our website at: http://ed.ted.com/get_involved.

PBS has long brought you original, thought-provoking programming. With PBS Digital Studios, we take that same mission and apply it to the Internet age. Working with creators from across the web, our network of short-form video series will showcase the best of the Internet while also celebrating the best parts of public television.

Gresham College

Gresham College exists for the sole purpose of disseminating knowledge to the public through free lectures. This four century old tradition continues today with the three or more lectures a week being made available for free download from our website.