How We Got to Now

The Development of Chlorine

Clip: Episode 1 | 4m 55s

When the toilet was first invented, it overwhelmed water systems and caused a real threat to public health. Here, Steven describes the story of how inventor John Leal doggedly pursued his idea to use chlorine to purify water.

Aired: 09/11/14

Rating: NR

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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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