Warming rivers in US West killing fish, imperiling industry

In this June 8, 2021, file photo, a dead chinook salmon floats in a fish trap on the lower Klamath River in Weitchpec, Calif. Baby salmon are dying by the thousands in one California river, and an entire run of endangered salmon could be wiped out in another. Fishermen who make their living off adult salmon, once they enter the Pacific Ocean, are sounding the alarm as blistering heat waves and extended drought in the U.S. West raise water temperatures and imperil fish from Idaho to California. (Nathan Howard/Associated Press)