NPR News: Why Are Salmon Being Found Dead In Rivers Across Western Alaska?

Why Are Salmon Being Found Dead In Rivers Across Western Alaska?
The largest die-off reported comes from the Koyukuk River, a tributary of the Yukon. Researchers suspect record warm waters as the cause but not all salmon are affected.

Đọc tiếp trên NPR
August 13, 2019 at 04:00PM
Environment