NPR News: U.S. Air Pollution Still Kills Thousands Every Year, Study Concludes

U.S. Air Pollution Still Kills Thousands Every Year, Study Concludes
An analysis examining mortality among millions of Americans concludes that a tiny decrease in levels of soot could save about 12,000 lives each year.

Đọc thêm tại NPR
at June 29, 2017 at 04:01AM
Health & Science