The agency previously issued alerts when the air quality index, or AQI, was forecast for the “unhealthy,” or red, range, ...

Add Yahoo as a preferred source to see more of our stories on Google. Two new studies have identified an alarming connection between exposure to wildfire smoke during pregnancy and autism in young ...

Wildfire seasons in California have turned the sky orange and the air thick, but new research suggests the harm may start long before smoke stings the eyes. A large study of births in the state links ...

Chronic exposure to pollution from wildfires has been linked to tens of thousands of deaths annually in the United States, according to a new study. The paper, published Wednesday in the journal ...