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Extras

Video thumbnail: How We Got to Now Episode 4 Preview | Light

How We Got to Now

Episode 4 Preview | Light

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

Episode 4 Preview | Light

Video thumbnail: How We Got to Now The invention of the light bulb

How We Got to Now

The invention of the light bulb

How was the first long-lasting light bulb invented?

The invention of the light bulb

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