As Nigeria battles multiple security crises, a single attack in the west left more than 160 people dead and raises new questions about who's really in control.
As South Carolina's outbreak grows to 876 confirmed cases, vaccinations in the state surged in January. Cases have also been reported in two ICE detention facilities.
Ski mountaineering will make its Olympic debut this year, the first winter sport to do so since 2002. Skeleton, luge, ski jumping and moguls are also getting new events.
US Olympic athletes are arriving and settling into their digs for the next couple of weeks in Italy. Curlers are amazed by the mountain scenery in Cortina; figure skaters are plant fostering in Milan; and the big air slopestyle women are "smashing pizzas" in Livigno.