Food and Drug Administration officials say they will ratchet up requirements for vaccine studies, citing concerns about COVID shots for kids. But public health experts question the agency's analysis.

The storm will spread through the Midwest and Great Lakes regions over the weekend with "widespread heavy snowfall and hazardous travel conditions," the National Weather Service said.

The Czech-born British playwright is known for Arcadia, Rosencrantz and Guildenstern Are Dead and The Coast of Utopia. Stoppard also wrote screenplays for Brazil and Shakespeare in Love.