Clear Lake, north of San Francisco Bay, is California's oldest lake and a potential treasure trove for climate scientists.
State and local officials are under increasing pressure to plan for the changes that California will see in the decades ahead with its shifting climate. They need answers about what those changes will look like and mean for the state. Scientists are searching for those answers on several fronts, from marshes to mountaintops, to the bottom of California's oldest lake. Reporter: Molly Samuel
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