The stunning truth about asbestos use in the U.S.

Asbestos is no longer ubiquitous in building materials, and since it's proven to cause cancer, many Americans likely assumed the substance had been banned entirely. But not only is asbestos a naturally occurring mineral, it is also still used to make some household products. Science correspondent Miles O’Brien reports on "broken" U.S. regulation and why we continue to import the carcinogen.

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