 It's not just the U.S. suffering under extreme heat this week. Extreme heat's also sweeping southern Europe. A dozen cities in Italy are under severe heat warnings, with temperatures continuing to hover around triple digits, Fahrenheit. In North Macedonia, the extremely hot weather's fueling hundreds of wildfires that have been burning for weeks. The government declared a month-long state of crisis. In Greece, municipalities are restricting certain forms of outdoor work. Earlier and longer waves of extreme heat around the globe.