Why Wildfire Smoke Is So Dangerous

Now Playing

Why Wildfire Smoke Is So Dangerous

Next Up

SpaceX Starship Explodes On Launch Pad

Debris From SpaceX Rocket Rains Down On Florida

Watch: SpaceX Rocket Explodes After Liftoff

Japan Rocket Launch Doesn’t Go As Planned

Atlanta Traffic Slows When Inflatables Hit Highway

Umbrella Up! What Rainwater Really Does To Skin

The Most Dangerous Beaches In The US Revealed

Summer Solstice: Best Sunrise Spots Across The US

This Poodle Has An Important Beach Job

Tornado Strikes Near Pikes Peak In Colorado

How To Properly Apply SPF And Makeup

Inside Weather Monitoring At Breeze Airways

Cruise Ship Breaks Loose In Alaska

Strange Signal Stumps Antarctic Scientists

Here's Why This Towering Cloud Is So Thin

Large Tornado Churns Next To A Rainbow

See The Adventures Of An (Inflatable) Giraffe On The Loose

At Least 6 Killed In West Virginia Flash Floods

AC: Turn It Down Or Leave It Running?

Watch: Tornadoes Strike Minnesota On Monday

Bonnaroo Canceled After Rain And Lightning

Planets And Moon To Put On A Show

This Change Has Decreased Wildlife Road Deaths

Watch Bobcat Reunite With Lost Baby After Thunderstorms