How We Got to Now

Episode 4 Preview | Light

Preview: Episode 4 | 43s

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

Aired: 09/11/14

Rating: TV-PG

Problems Playing Video? | Closed Captioning

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Be Inspired! Be an Innovator!

For the Classroom

Be Inspired! Be an Innovator!

Explore lesson plans, video clips, background essays, discussion questions, activities and more from PBS LearningMedia on how to be an Innovator. For Grades K-13+

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