CBS Evening News with Norah O'Donnell, 07/21/23

Extreme heat causes more deaths each year than any other weather event, and health officials from California to Florida are seeing a surge in heat-related visits to emergency rooms. A disturbing new report from the centers for disease control on the rise of e-cigarette use. More than 10% of young adults in the U.S. Are now vaping, a dramatic increase since the start of the pandemic.