Pollution

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

Hotter, drier mountains leach more metal into streams from abandoned mines and natural deposits

We must build tomorrow’s transportation infrastructure with equity at its core

Most of the pollutant arrives at the coasts by river

Like other aerosols, these tiny particles scatter and absorb sunlight, influencing Earth’s temperature

The consumer devices track pollutants as well as CO₂—a proxy for potentially virus-laden human breath

The Montreal Protocol has helped heal the ozone layer that blocks harmful ultraviolet rays