Environment Health: California's rivers and lakes are getting warmer, which puts a great deal of stress on the native fish that live in those bodies of water. But all isn't lost. There are changes that could be made that could help keep them from going extinct.
As summer begins along many U.S. rivers, you'll find anglers patiently contemplating their rods in the flowing water.
But researchers say when it comes to California, in the future they may be out of luck if they are looking to hook an indigenous fish....