Contaminants in the atmosphere appear to have harmful effects on neurodevelopment and cognitive function.

A number of epidemiological studies support a link between air quality and poor health outcomes, and researchers are searching for explanations in the lab.

Firefighters who didn’t develop obstructive airway disease after the World Trade Center attacks had higher levels of omega-3 fatty acids and other factors that hint at possible protective effects of diet.

Most of the genetic alterations are harmless, but some may contribute to cancer.

Silver birch, elder, and yew win out in an experiment to see which species best capture the tiny particles from diesel pollution.

A study compares verbal and math test scores to air quality measurements in China and finds a correlation.

The sources of pollution are not known yet because of incomplete data collection.

Opponents of the guidelines, which would bar results of many public health studies from use in policy making, include scientific and healthcare organizations.

A new report estimates that 95 percent of people live in areas with dangerously high levels of fine particulate matter such as dust and soot.