Ron Gutman: The hidden power of smiling

Gever Tulley: 5 Dangerous things you should let your children do

Bill Gates: The next outbreak? We’re not ready

Ray Kurzweil: Get ready for hybrid thinking

How the US Government will survive doomsday

How America became a superpower

China's geography problem

What is NOT Random?

Misconceptions about the Universe

How simple ideas lead to scientific discoveries

Elon Musk: The mind behind Tesla, SpaceX, SolarCity

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