Levees Make Mississippi River Floods Worse, But We Keep Building Them
For more than 150 years, scientists have known that levees increase flood risk on the Mississippi River. That hasn't stopped local officials from building up levees in response to more severe floods.
Đọc thêm tại NPR
at May 21, 2018 at 10:15PM
Health & Science
Thứ Hai, 21 tháng 5, 2018
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