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Light

Light

Season 1 Episode 4
54:40
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Clean

Clean

Season 1 Episode 1
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Time

Season 1 Episode 2
55:11
Glass

Glass

Season 1 Episode 3
54:40
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Cold

Season 1 Episode 5
54:40
How We Got to Now Season 1

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Season 1 Episode 6
54:41
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Measuring Sound

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How We Got to Now

Episode 4 Preview | Light

Host Steven Johnson explores how light has altered sleeping patterns, architecture and more.