Smoke from forest fires and biomass burning can remain in the atmosphere for weeks, traveling thousands of kilometers and affecting climate, public health and ecosystems far away from its source. The climate crisis is increasing the frequency, intensity and impacts from fires globally, which further accelerates climate change and creates crises in public health and ecosystems. The Weather Channel scientific editor Ally Hirschlag wrote anarticle in BBC and discussed with the affiliated researcher of ICE-HT/FORTH prof. Athanasios Nenes on the effects of wilfires, including results from his ERC project PyroTRACH hosted by the Institute and C-STACC.