NBC Nightly News Full Episode - July 15

Terrifying video of train trapped in wildfire

How to protect yourself from wildfire smoke

Dangerous Air Quality For Millions As Wildfire Smoke Shrouds The Sky

Canadian wildfire smoke descends on parts of US, including New York City

CN train crew surrounded by flames as wildfires sweep northern Ontario

Train crew in Canada 'encased' by intense flames amid wildfires

More communities told to be ready to evacuate as wildfires spread in northern Ontario

Wildfire smoke sends NYC air quality into unhealthy range

Wildfire smoke engulfs Toronto, Canada and turns its skies orange

Canadian wildfires spread as smoke prompts air quality alerts in 18 states

Terrifying footage shows train engulfed by wildfire in Canada

Watch as firefighters battle huge wildfire in the Scottish Highlands

Air Quality Alerts Spread To 17 States As Canadian Wildfire Smoke Continues To Pour In

Canadian wildfire smoke in in Ontario, Minnesota triggers high risk air alerts