7/29: The Delta variant spurs new vaccine mandates. Children are getting the coronavirus at alarming rates.

President Biden will announce today that for the first time, all federal workers must get vaccinated, or follow strict protocols. In Louisiana, school-aged children now make up the third largest number of new COVID infections in the state. We spoke to the governors of Nevada and California, Steve Sisolak and Gavin Newsom, about weighing indoor mask mandates for their states. American Suni Lee has just won gold in all-around gymnastics, an event Simone Biles skipped. Florida's Gulf Coast is being hit hard this summer by what's known as a "red tide," an algae bloom that can kill fish and make it hard for humans to breathe.

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