NPR News: This Is Why You Don't See People-Sized Salmon Anymore

This Is Why You Don't See People-Sized Salmon Anymore
Fishermen used to stand next to Chinooks almost as tall as they are. But a century's worth of dam-building, overfishing, habitat loss and hatcheries has cut the size of the average fish in half.

Đọc thêm tại NPR
at March 12, 2018 at 07:00PM
Health & Science