TED's early emphasis was on technology and design, consistent with its Silicon Valley origins, but it has since broadened its repertoire to include talks on many scientific, cultural, and academic topics. It is owned by Chris Anderson, a British American businessman, through the Sapling Foundation.
The main TED conference is held annually in Vancouver, British Columbia, Canada at the Vancouver Convention Centre. Prior to 2014, the conference was held in Long Beach, California, United States. TED events are also held throughout North America and in Europe and Asia, offering live streaming of the talks. They address a wide range of topics within the research and practice of science and culture, often through storytelling.
The speakers are given a maximum of 18 minutes to present their ideas in the most innovative and engaging ways they can. Past speakers include Bill Clinton, Sean M. Carroll, Elon Musk, Ray Dalio, Cédric Villani, Stephen Hawking, Jane Goodall, Al Gore, Temple Grandin, Gordon Brown, David Cameron, Billy Graham, Richard Dawkins, Bill Gates, Dolph Lundgren, Shashi Tharoor, Bono, Larry Page and Sergey Brin, Leana Wen, Pope Francis, and many Nobel Prize winners. TED's current curator is the British former computer journalist and magazine publisher Chris Anderson.
According to wikipedia