http://www.ted.com Looking back over a long career, architect Moshe Safdie digs deep into four extraordinary projects to talk about the unique choices he made on each building — choosing where to build, pulling information from the client, and balancing the needs and the vision behind each project. Sketches, plans and models show how these grand public buildings, museums and memorials, slowly take form.

http://www.ted.com George Dyson tells the amazing story of Project Orion, a massive, nuclear-powered spacecraft that could have taken us to Saturn in five years. With a priceless insider’s perspective and a cache of documents, photos and film, Dyson brings this dusty Atomic Age dream to vivid life.

http://www.ted.com Virtuoso Pamelia Kurstin plays and discusses her theremin, the not-just-for-sci-fi electronic instrument that is played without being touched. Songs include the classic “Autumn Leaves,” Billy Strayhorn’s “Lush Life” and a composition by David Mash, “Listen: the Words Are Gone.” Piano: Makoto Ozone.

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