Arrow of Time - Sixty Symbols

Sean Carroll on the arrow of time.
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Sean's book about the arrow of time: http://amzn.to/16FzAt8

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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Entropy - Sixty Symbols

Broken vases, cups of tea and a scientist's tombstone - welcome to the world of entropy.

Source:  Sixty Symbols

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