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Sean Carroll: Distant Time and the Hint of a Multiverse

At TEDxCaltech, cosmologist Sean Carroll attacks -- in an entertaining and thought-provoking tour through the nature of time and the universe -- a deceptively simple question: Why does time exist at all? The potential answers point to a surprising view of the nature of the universe, and our place in it.


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Hannah Brencher: Love Letters to Strangers

Hannah Brencher's mother always wrote her letters. So when she felt herself bottom into depression after college, she did what felt natural -- she wrote love letters and left them for strangers to find. The act has become a global initiative, The World Needs More Love Letters, which rushes handwritten letters to those in need of a boost.

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Dealing with Ups and Downs: Another Way to Look at It!

In this video Christine Eilvig, founder of The Spiritual Salon, discusses way to build a life you will love.

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'Hiroshima' by Sarah Kay

Wonderful spoken word poetry from a young master wordsmith.

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Carl Honore: In Praise of Slowness

MIT professor Neil Gershenfeld talks about his Fab Lab -- a low-cost lab that lets people build things they need using digital and analog tools. It's a simple idea with powerful results.

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Global Warming - Can We Risk It?

A new way to think about the climate change debate, with over 13 million total views on various postings.

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