Wildfire Smoke Reversing Decades of Air Quality Gains Across U.S.

Wildfire smoke is undoing air quality improvements made over past decades in the majority of U.S. states.
Over 2 billion people globally were exposed to harmful levels of fire-related air pollution between 2010-2019.
Experts say climate change is increasing frequency and severity of wildfires, worsening smoke pollution.
Wildfire smoke can have significant health impacts including respiratory illness, cardiovascular problems.
Stricter regulations, new strategies needed to combat growing wildfire smoke pollution problem.