The Atlantic meridional overturning circulation, commonly referred to as the "AMOC," is a system of ocean currents confined to the Atlantic basin that plays a crucial role in regulating Earth's climate by transporting heat from the Southern to the Northern Hemisphere.

We typically spend 80% of our time indoors, where the quality of the air we breathe depends on the age and type of building we occupy, as well as indoor pollution and outdoor pollution sources.

At the bottom of the world, where few humans have ever set foot, an unwelcome visitor has arrived.

The comprehensive research examined air quality in Reno, Nevada during 106 wildfires to illuminate the atmospheric and public health impacts of smoke.

UCalgary ecotoxicology expert Ben Barst contributes to study of marine food’s impact on predators.

Specialized robots that can both fly and drive typically touch down on land before attempting to transform and drive away.

During a severe heat wave in 2023, scientists scuba diving off the coast of Papua New Guinea captured clownfish to measure their bodies. 

As coral reefs struggle to adapt to warming waters, high levels of pollution and sea-level rise, ballooning sea-urchin populations are threatening to push some reefs in Hawaii past the point of recovery.

Fragrances and lotions don't just change the way people smell, they actively alter the indoor air chemistry around the wearer, disrupting a critical natural process the body uses to protect itself from pollution, according to an international research team that includes scientists from Penn State.

The 120-mile Tijuana River flows from Baja California into the United States and discharges millions of gallons of wastewater — including sewage, industrial waste and runoff — into the Pacific Ocean every day, making it the dominant source of coastal pollution in the region.