The main chemical in flame retardant — ammonium phosphate — is known to poison fish and other aquatic life, including vulnerable species like Chinook salmon.
The U.S. Fish and Wildlife Service has counted 160,000 juvenile winter-run Chinook salmon in the Sacramento River this year, down from an average of 1.3 million.
A new study led by University of Idaho professor Daniele Tonina finds that global warming could reduce Chinook salmon spawning habitat in Bear Valley Creek in Central Idaho by 23% by the year 2040.