NPR News: When Wildfire Smoke Invades, Who Should Pay To Clean Indoor Air?

When Wildfire Smoke Invades, Who Should Pay To Clean Indoor Air?
Public health agencies are set up to regulate air pollution from cars, trucks and factories. Wildfire smoke presents a different set of threats, prompting some of those agencies to rethink priorities.

Đọc tiếp trên NPR
February 25, 2018 at 08:14PM
Environment