TED Radio Hour for Friday, June 6, 2014

Can The Sun Fuel A Flight Around The World?

Explorer Bertrand Piccard explains why he's aiming to carry out an unprecedented mission: to circle the planet in a solar-powered airplane.
Ford Executive Chairman Bill Ford describes how we can create a green future of smart roads and smart cars.
Zipcar co-founder Robin Chase makes the case for car-sharing as the solution to global gridlock.
Former New York City Transportation Commissioner Janette Sadik-Khan says cities can tackle the challenges of tomorrow by completely re-imagining our streets today.

Is Space Tourism Finally About To Take Off?

Entrepreneur Richard Branson shares his vision for private, commercial space travel.
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