Spawning Chinook salmon face new challenges

Early indications in the Russian River and other North Coast waterways suggest that more salmon are spawning this season. That’s good news for the beleaguered fish, but their troubles are far from over. New threats related to climate change are now beginning to complicate their reproduction, as Joe Rubin reports in the first of this two part series on the state of the Chinook salmon, and the struggles they face swimming upstream into the Sierra foothills.