Tornado Threat Escalates After Destruction In Iowa

Now Playing

Tornado Threat Escalates After Destruction In Iowa

Next Up

Severe Storms Bombard Western New York With Hail

Dashcam Captures Branch Falling On Motorcyclist

Brush Fire Forces California Shoppers To Flee

Gone With The Whirlwind: Tent Flies Over Park

Over 3,300 Evacuated as Dagestan Floods Intensify

Don’t Try This At Home: Man Vs. Hailstorm

Tiny Dog Chasing The Sun Disappears In Backyard

6 Of The Worst Light-Polluted Cities

Sign Of Spring: Stunning Snow Geese Migration

Watch: Helicopter Saves Dog From Frigid River

Russian City Faces Emergency As Streets Flood

Watch: Massive Swiss Avalanche's Unexpected Ending

Watch: Lightning Fixates On NYC’s Tallest Skyscraper

NASA Unveils New Moon Mission Amid Safety Setbacks

Mom Sees Snow For First Time At 63

Watch: Power Line Fire Goes From Bad To Worse

Will The Northern Lights Peak In March?

The Next Three Months Bring The Most Tornadoes

Insane Wall Of Dust Sweeps Across Africa

TSA Workers Get Emergency Pay After 6-Week Shutdown

Frisbee Skiing? Yes - And It’s Spectacular

Tornadoes To Snowfall: Tennessee’s Wild 24-Hour Ride

See Meteorites From That Ohio Fireball

Listen: Electrical Discharges Crackle On Mars