It’s hard to forget the excruciating heat that blanketed the Pacific Northwest in late June 2021. Temperatures in Oregon, Washington and British Columbia soared to well above 100 degrees Fahrenheit, with Seattle setting an all-time heat record of 108 degrees on June 28. During the heat wave, also called a heat dome, scientists and community … Read more
Agricultural pollution comes from the prairie, but its economic impact on humans is a problem for cities. A study led by environmental scientists at Rice University’s George R. Brown School of Engineering puts numbers to the toll of reactive nitrogen species produced in America’s croplands. The study led by Daniel Cohan, an associate professor of … Read more
Updated October 2026: This article has been expanded with current technical guidance, clearer limitations, additional examples and new practical visuals while retaining its original URL and core reader flow. Asthma affects millions of people, and airborne particles can be triggers for some individuals. A suitable air purifier may reduce certain airborne particles such as smoke, … Read more