San Francisco swimmers take a cold plunge for a good cause

Swimmers in San Francisco took a cold swim Saturday morning to raise money for cancer research. 200 swimmer and 100 volunteers took part in Swim Across America's event which benefited UCSF Benioff Children's Hospitals in San Francisco and Oakland. Over the past 17 years, the annual event has raised in more than $6 million for the two hospitals. KTVU's Emma Goss reports.

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