As pollution in Delhi peaks in winter, people are advised to avoid morning walks. But why is morning air so toxic despite low ...

Children exposed to traffic-related air pollution show seasonal changes in their nasal bacteria, with winter pollution driving a shift toward less diverse, and potentially more harmful, microbial ...

Air pollution levels keep getting worse for more people in the U.S., according to a new report, and experts say the Trump administration’s proposed deregulation plans will make it even harder for ...

"The late morning, specifically between 11:30 am and 12 pm, is typically safer due to rising temperatures and sunlight aiding in pollutant dispersion. Another good time is late afternoon, from 3:30 to ...