Hazardous snow, sleet and freezing rain disrupted travel plans and caused power outages in the Mid-Atlantic region, as bitter cold set in.

Ian Cramer, the 43-year-old son of Senator Kevin Cramer, Republican of North Dakota, led the police on a highway pursuit that killed a sheriff’s deputy.

For Claudia Adriazola-Steil, the issue of safety, and the goal of lowering emissions and improving access, is deeply personal.