Wildfire smoke now bigger prenatal threat than human sources of air pollution

Regulations reduced prenatal exposure to harmful emissions, but wildfire smoke is erasing gains. https://arstechnica.com/science/2026/08/wildfire-smoke-now-bigger-prenatal-threat-than-human-sources-of-air-pollution/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social