Toxic PAH air pollutants from fossil fuels 'multiply' in sunlight

When power stations burn coal, a class of compounds called polycyclic aromatic hydrocarbons, or PAHs, form part of the resulting air pollution. Researchers have found that PAH toxins degrade in sunlight into child compounds and byproducts.

source https://phys.org/news/2021-03-toxic-pah-air-pollutants-fossil.html