"Poisonous Algae Blooms Threaten People, Ecosystems Across U.S."

"Serious algae outbreaks have hit more than 20 states this summer. Organisms are shutting down beaches in Florida, sickening swimmers in Utah and threatening ecosystems in California.

The blooms are a normal part of summer, but the frequency, size and toxicity this year are worse than ever.

And water managers are rattled."

Lesley McClurg reports for KQED August 29, 2016.