Simon Sinek: How great leaders inspire action
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 — and as a counterpoint Tivo, which (until a recent court victory that tripled its stock price) appeared to be struggling.

Elizabeth Pisani: Sex, drugs and HIV – let’s get rational
Armed with bracing logic, wit and her “public-health nerd” glasses, Elizabeth Pisani reveals the myriad of inconsistencies in today’s political systems that prevent our dollars from effectively fighting the spread of HIV. Her research with at-risk populations — from junkies in prison to sex workers on the street in Cambodia — demonstrates the sometimes counter-intuitive measures that could stall the spread of this devastating disease.

Dennis Hong: My 7 species of robot
At TEDxNASA, Dennis Hong introduces seven award-winnning, all-terrain robots — like the humanoid, soccer-playing DARwIn and the cliff-gripping CLIMBeR — all built by his team at RoMeLa, Virginia Tech. Watch to the end to hear the five creative secrets to his lab’s incredible technical success.

Jonathan Drori: Every pollen grain has a story
Pollen goes unnoticed by most of us, except when hay fever strikes. But microscopes reveal it comes in stunning colors and shapes — and travels remarkably well. Jonathan Drori gives an up-close glimpse of these fascinating flecks of plant courtship.

Dean Kamen: The emotion behind invention
Soldiers who’ve lost limbs in service face a daily struggle unimaginable to most of us. At TEDMED, Dean Kamen talks about the profound people and stories that motivated his work to give parts of their lives back with his design for a remarkable prosthetic arm.


