Metal mixtures found in the leftover smoke, ash and debris from the deadly 2023 Maui wildfires were harmful to the lung health of people living nearby long after the burning ended, a new study says. The work shows that major wildfires, which are worsening with the planet’s warming, could have lasting effects beyond immediate exposure. Post-wildfire air quality needs to be monitored longer term, the research suggests, and recovery efforts need to consider what might remain in contaminated and...