Pollution

Smog from wildfires is getting worse across much of the U.S., according to a NASA-funded study

Coal is the most significant fossil fuel contributor to climate change

The long-anticipated “Schedule F” order strips job protections meant to safeguard federal employees from political interference

In an effort to reduce prices at the pump, an EPA wavier allows the sale of fuel with 15 percent ethanol content

Light pollution is dangerous for birds flying over towns and cities. Here’s how you can help

The environmental crises of the past often seem to disappear—have problems like acid rain and smog been solved?

It turns out that salmon exposed to cocaine through water pollution do a lot of swimming—which may not be a good thing

Strikes to Iran’s Bushehr nuclear power plant could release long-lasting radioactive cesium 137 into the Persian Gulf, causing environmental calamity and threatening drinking-water supplies for millions

The Department of Health and Human Services and the Environmental Protection Agency announced a joint effort to track microplastics in drinking water—but experts say doing so will be difficult

Iranian residents have reported headaches, difficulty breathing, and oil-contaminated rain settling on buildings and cars after the bombing of oil depots

A proposed $1.3-billion U.S. Army Corps of Engineers port expansion in North Carolina threatens to unearth decades of “forever chemicals.” The government’s initial plan: don’t test the mud

A surprising FDA reversal on Moderna’s mRNA flu vaccine, early promise from a universal inhaled vaccine, and a desert fossil find that is reshaping spinosaurid history.