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

PBS NewsHour
PBS NewsHour
131 هزار بار بازدید - 5 سال پیش - Asbestos is no longer ubiquitous
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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5 سال پیش در تاریخ 1397/12/22 منتشر شده است.
131,091 بـار بازدید شده
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