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Extras

Video thumbnail: How We Got to Now The Story of Standardized Time

How We Got to Now

The Story of Standardized Time

Steven explains how we developed a global system of standardized time.

The Story of Standardized Time

Video thumbnail: How We Got to Now Episode 2 Preview | Time

How We Got to Now

Episode 2 Preview | Time

Get a closer look at Episode 2, "Time."

Episode 2 Preview | Time

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