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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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Wayne Dyer's Leukemia & John of God's Healings on Wayne

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Dr. Wayne Dyer Discusses his Leukemia & John of God's healings with Lilou Mace.

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Natalie Warne - Anonymous Extraordinaries

Natalie Warne - Anonymous Extraordinaries

Born in an underserved part of downtown Chicago, Natalie and her five siblings had to survive on her mother's humble teacher salary, moving from city to city to find work. No stranger to adversity, Natalie was determined to make something great out of her life.

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Annie Murphy Paul: What We Learn Before We're Born

Annie Murphy Paul: What We Learn Before We're Born

Pop quiz: When does learning begin? Answer: Before we are born. Science writer Annie Murphy Paul talks through new research that shows how much we learn in the womb -- from the lilt of our native language to our soon-to-be-favorite foods.

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Ramona Pierson: An Unexpected Place of Healing

Ramona Pierson: An Unexpected Place of Healing

When Ramona Pierson was 22, she was hit by a drunk driver and spent 18 months in a coma. At TEDxDU she tells the remarkable story of her recovery -- drawing on the collective skills and wisdom of a senior citizens' home.

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Hannah Brencher: Love Letters to Strangers

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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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