Winter Storm Fern Could Slam 35 States — Here’s What Officials Are Warning About (and the One Detail That Has People Nervous)

13 states and D.C. are under a federal power grid emergency. The Department of Energy is letting plants run past their pollution limits to keep the lights on. Here’s what it means for you

The Department of Energy has issued an emergency order for PJM Interconnection, the largest grid operator in the US, as unusually hot weather strains…