TED（指technology, entertainment, design在英语中的缩写，即技术、娱乐、设计）是美国的一家私有非营利机构，该机构以它组织的TED大会著称。TED诞生於1984年，其发起人是里查德•沃曼。        2002年起，克里斯•安德森接管TED，创立了种子基金会（The Sapling Foundation），并营运TED大会。每年3月，TED大会在美国召集众多科学、设计、文学、音乐等领域的杰出人物，分享他们关於技术、社会、人的思考和探索。 　　TED环球会议是TED大会的子会议。2005年，第一届TED环球会议在英国召开。2007年，TED非洲大会在坦尚尼亚召开。2008年9月，第二届TED非洲大会於南非召开。 　　从2006年起，TED演讲的视频被上传到网上。截至2010年4月，TED官方网站上收录的TED演讲视频已达650个，有逾五千万的网民观看了TED演讲的视频。所有的TED演讲的视频都是以创用CC的方式予以授权的。 

In 1962, Charles Van Doren, who was later a senior editor of Britannica said the ideal encyclopedia should be radical, it should stop being safe. But if you know anything about the history of Britannica since 1962, it was anything but radical, still a very completely safe, stodgy type of encyclopedia. Wikipedia, on the other hand,  begins with a very radical idea. and that's for all of us to imagine a world in which every single person on the planet is given free access to the sum of all human knowledge. And that's what we are doing. So Wikipedia you just saw the little demonstration of it. it's a freely licensed encyclopedia. It's written in lots of languages, It's written using Wiki software, which is the software he just demonstrated, so everyone can quickly edit and save, and it goes live on the internet immediately, and anything about Wikipedia is managed by virtually an all-volunteer staff.