Pollution

Toxic algae blooms found could have helped destabilize society

Administrator Michael Regan argues regulation of mercury, ozone, water and coal ash will also curb greenhouse gases

Vehicles can kick up radioactive dust, and fighting risks igniting a wildfire in the exclusion zone

Burning piles of used gloves, test kits and syringes release toxic pollutants. But there are ways to improve medical recycling

The U.N. passed a resolution yesterday to develop a global treaty to control plastic waste

The city has deployed a system of sensors to flag highly polluting vehicles. Nearly all of them have been repaired, helping to clean Hong Kong’s air.

Truly global participation in the process will create more than just a Paris Agreement for plastics

The move would reverberate around the country because more than a dozen other states follow California’s regulations

Health-damaging PFASs are nearly impossible to break down—but a new hot-water technique can destroy them

The 2020 fire season subjected half the western U.S. population to a stew of particulate matter and ozone

Indigenous communities along Alaska’s coast are developing scientific networks to test shellfish for toxins because the state is not doing so

An analysis of roughly 135,000 watersheds reveals that large amounts of key pollutants come from human wastewater, not just agricultural runoff