Other Americans are at risk as well. Power supplies of all sorts failed in the extreme cold, including natural gas-fired power plants that were knocked offline amid icy conditions and, to a smaller extent, wind turbines that froze and stopped working. More than 100 million people live in areas under winter weather warnings, watches or advisories, and blackouts are expected to continue in some parts of the country for days.
More deadly storms coming so prepare better, experts say
