Air quality across the country has improved greatly over the decades, as shown in Environmental Protection Agency reports. These improvements are good news overall, but lingering effects of past air ...

Air pollution is often portrayed as something that affects entire cities. In fact, levels can vary enormously over just a few metres. Our research shows that one of the greatest challenges for ...

Getting your Trinity Audio player ready... Metro Denver and the northern Front Range this summer documented one of the worst ozone pollution seasons of the past 30 years, jeopardizing the region’s ...