Each year, the State of the Air Report ranks PM2.5 levels in U.S. cities across two categories - short-term particle pollution, or daily spikes, and year-round particle pollution.

Air pollution refers to a wide range of gases, liquids, and solids suspended in the atmosphere. Known to have harmful effects on the respiratory and cardiovascular systems, these contaminants are now ...

New research led by ecologists at the University of Toronto examining annual plastic pollution entering oceans, rivers and lakes around the world, outlines potential impacts of various mitigation ...

Summary results infographic. This material relates to a paper that appeared in the 18 Sept., 2020, issue of Science, published by AAAS. The paper, by S.B. Borrelle at University of Toronto in ...