4 maps show where cold in U.S. will be most dangerous in coming days
Alerts for cold weather are in effect for nearly half of the U.S. population, running from the northern Plains to the Gulf Coast and the Rockies to the Southeast.
California wildfires: What we know about L.A.-area fires, what caused them, who is affected and more
Fueled by powerful winds and dry conditions, a series of ferocious wildfires erupted last week and roared across the Los Angeles area.