The immune cost of dirty air

This piece was commissioned and published by an external outlet. The teaser below summarises it; follow the link to read the full feature on the publisher’s site.
Particulate pollution is usually framed as a respiratory problem. But a growing body of work suggests its reach extends into the long-term programming of innate immune cells — a form of “trained immunity” that can leave the body primed for chronic inflammation long after the smog has cleared.