Life-threatening heatwave blazing through 20 states, impacting millions

Tens of millions in the U.S. are facing a brutal heatwave with triple digit temperatures. From California to the Mississippi River, at least 20 states are under heat alerts. The heat will only impact more Americans soon. The heatwave will move east as the forecast calls for some of the hottest temperatures of the year. Europe is also facing brutal conditions and crippling drought.