Natural river breezes create clouds over the Amazon that mimic the signs of pollution, complicating climate impact assessments.
air pollution
Posted inEditors' Highlights
Human Effects on Background Atmosphere have Affected Mercury Chemistry
Atmospheric mercury chemistry has evolved over time due to changes in atmospheric composition, especially for changing concentrations of bromine radicals, hydroxyl radicals, and ozone.
Posted inResearch & Developments
Power Plants Will Be Allowed to Release More Than Twice As Much Mercury Into the Air
At a 20 February event in Kentucky, the Trump administration announced plans to loosen pollution restrictions for coal-burning power plants, including limits on emissions of mercury, a hazardous neurotoxin.
Posted inResearch & Developments
The Endangerment Finding Is Lost
Tomorrow, the EPA will revoke the 2009 Endangerment Finding, finalizing a July proposal to do so, Press Secretary Karoline Leavitt said in a 10 February announcement.
Posted inResearch Spotlights
Which Countries Are Paying the Highest Price for Particulate Air Pollution?
Reducing the effects of air pollution requires estimations of where it costs the most—in both money and lives.
Posted inNews
Wildfire Smoke Linked to 17,000 Strokes Annually in the United States
A study of 25 million Medicare participants adds to a body of evidence suggesting that prolonged exposure to wildfire smoke is more harmful to human health than other forms of air pollution.
Posted inReport
The State of the Science 1 Year On: Environment
Administration policies have eliminated funding sources, review processes, and pollution limits designed to protect the nation’s land, water, and air.
Posted inNews
New Insights into the Foggy Role of Contrails Within Clouds
New research helps clarify how frequently contrails form within clouds and what that means for their effect on the climate.
Posted inNews
Fungal Spores in Wildfire Smoke Could Cause Lung Disease
Mice exposed to fungi spready by wildfires developed symptoms, exposing a potential health hazard to humans that has been understudied.