Expanding heat dome threatens millions across the U.S. [Sxlsvc3HuOG] Published in Everyday Knowledge More than half of Americans will be under heat warnings this week. Maddie Gannon reports. 2cK9ltW0hTY 9G19MMj46A7 D8LNtMUJOfm xKRpjeGLOJY MeX9bKWoTvj hrpUloYTyIh