Toxic wildfire pollution infiltrates homes of 1bn people a year, study finds

Dangerous indoor pollution could be tackled with air purifiers but costs are too high for many, researchers say

Toxic pollution from wildfires has infiltrated the homes of more than a billion people a year over the last two decades, according to new research.

The climate crisis is driving up the risk of wildfires by increasing heatwaves and droughts, making the issue of wildfire smoke a pressing global issue", scientists said.