Fuel Efficiency And Smog In Arizona
The EPA is holding hearings on a proposal to relax fuel efficiency standards. Arizona has come out in opposition — the state has a bad smog problem and was counting on the fuel rules to help fix it.
Đọc thêm tại NPR
at September 26, 2018 at 04:14PM
Health & Science
Thứ Tư, 26 tháng 9, 2018
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