A major storm sweeps across the U.S., bringing severe weather conditions such as blizzards, wildfires and tornadoes. Blizzard warnings are in effect for Nebraska, Kansas, Missouri, Iowa and Minnesota.

Tropical storm warnings and a hurricane watch were issued for the west coast of Florida and the panhandle as Debby crossed the Gulf of Mexico. Heavy rains are expected across the Southeast.

Iowa's Department of Public Safety says there could be many more people injured. Other severe weather events, such as floods and snowstorms, are expected in other parts of the country.

Chris Gloninger, a TV news meteorologist in Iowa, got harrassing emails and a death threat over his coverage of climate change. Now he's leaving the industry to tackle climate change head-on.