Researchers have been studying the respiratory health effects of ambient air pollution for
more than 70 years. While air pollution as a whole can include gaseous, solid, and liquid …

Air pollution is now fully acknowledged to be a public health problem and a social issue.
Particulate matter (PM) concentration has been linked with several clinical manifestations of …

Nine out of 10 people breathe air that does not meet World Health Organization pollution
limits. Air pollutants include gasses and particulate matter and collectively are responsible …

Air pollution has been considered a hazard to human health. In the past decades, many
studies highlighted the role of ambient airborne particulate matter (PM) as an important …

Particulate matter (PM) is a key indicator of air pollution and a significant risk factor for
adverse health outcomes in humans. PM is not a self-contained pollutant but a mixture of …

Air pollution is composed of a mixture of toxins, consisting of particles and gases emitted in
large quantities from many different combustion sources, including cars and industries. A …

Background: Specific characteristics of particulate matter (PM) responsible for associations
with respiratory health observed in epidemiological studies are not well established. High …

In the last 10 years there has been an abundance of new epidemiological studies on health
effects of particulate air pollution. The overall evidence suggests that fine particulate …

Particulate matter (PM) is a key indicator of air pollution brought into the air by a variety of
natural and human activities. As it can be suspended over long time and travel over long …

Results of recent research show that particulate matter (PM) composition and size vary
widely with both space and time. Despite the variability in PM characteristics, which are …