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Brian Cox
David Christian
Wendy Freedman
Chris Anderson
Fabio Pacucci
Rolf Landua
Venus Keus
James Tanton
Allan Adams
Sajan Saini
David Lunney
Risa Wechsler
Rene Laufer
Lorin Swint Matthews
Amit Sood
Marjee Chmiel and Trevor Owens
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Harry Cliff
Dennis Wildfogel
Elle Cordova
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TED: Ideas change everything