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Sheena Iyengar studies how we make choices — and how we feel about the choices we make. At TEDGlobal, she talks about both trivial choices (Coke v. Pepsi) and profound ones, and shares her groundbreaking research that has uncovered some surprising attitudes about our decisions.

Eythor Bender of Berkeley Bionics brings onstage two amazing exoskeletons, HULC and eLEGS — robotic add-ons that could one day allow a human to carry 200 pounds without tiring, or allow a wheelchair user to stand and walk. It’s a powerful onstage demo, with implications for human potential of all kinds.

TED collaborates with animator Andrew Park to illustrate Denis Dutton’s provocative theory on beauty — that art, music and other beautiful things, far from being simply “in the eye of the beholder,” are a core part of human nature with deep evolutionary origins.

You’ve never seen data presented like this. With the drama and urgency of a sportscaster, statistics guru Hans Rosling debunks myths about the so-called “developing world.”

Simon Sinek has a simple but powerful model for inspirational leadership all starting with a golden circle and the question “Why?” His examples include Apple, Martin Luther King, and the Wright brothers …

Like your uncle at a family party, the rumpled Swedish doctor Lennart Green says, “Pick a card, any card.” But what he does with those cards is pure magic — flabbergasting, lightning-fast, how-does-he-do-it? magic.