Thứ Bảy, 26 tháng 10, 2019

NPR News: Spike In Air Pollution In U.S.

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Spike In Air Pollution In U.S.
There's been a spike in air pollution in the U.S. over the past two years — a reversal of previous trends. NPR's Scott Simon talks to Chris Frey, a former Trump administration science adviser.

Đọc thêm tại NPR
at October 26, 2019 at 06:58PM
Health & Science
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