TED talks is website containing speeches from conference called TED (Technology, Entertainment, Design). TED is yearly conference organised in several cities around the world. It has been founded in 1984 by Richard Saul Wurman and Harry Marks. From 1990 this conference is organised regularly. Main idea of TED is "ideas worth spreading". Speakers are peoples from many different parts of interests like science, art, design, politics, education, culture, business, global questions and fun. TED website hosts more than 1.400 TED talks witch can be watched for free online. Since 2009 there is possibility to get licence for making local conference named TEDx + “city” (e.g. TEDxPrague or TEDxBrno). In April 2009, over 15 million of users saw more than 100 million TED Talks.
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You can try downloading from TED Talks on video example The history of our world in 18 minutes or you can try one of the latest videos bellow.