The health risks of wildfire smoke across the Midwest and Mid-Atlantic

More than 115 million people may be exposed to dangerous smoke and unhealthy air quality levels.

That's because wildfire smoke is spreading and triggering health advisories in at least 17 states from the Midwest to the Mid-Atlantic.

It's led to flight delays, the closure of pools and beaches, and the cancellation of many other outdoor activities.

Stephanie Sy reports. ...