Pollution

Coho salmon returning from its years at sea to spawn, seen near the Suquamish Tribe's Grovers Creek Hatchery.

Researchers Reveal Why Seattle Salmon Bite the Dust After Rainstorms

A chemical found in car tire debris washes off roads into waterways, killing coho salmon returning to spawn

A great blue heron seen wading in front of an oil refinery. Burning and producing fossil fuels are major sources of air pollution. A new study estimates that over the last four decades environmental regulations aimed at improving air quality have saved the lives of some 1.5 billion birds across the United States.

Study Estimates Clean Air Act Has Saved 1.5 Billion Birds

Over the last 40 years, bird populations across the U.S. did the best in places with the most stringent air pollution regulations

The highest concentration of microplastics—119 particles per quart of water—were found around Everest Base Camp, where climbers spend time resting, regrouping and acclimatizing to the high elevation.

Even Mount Everest, the World's Tallest Peak, Can't Escape Microplastics

At 27,690 feet in elevation, the mountain is the highest point above sea level where microplastics have been detected

Litter, much of it plastic, dots a beach in Santa Monica, CA, the morning after a beach cleanup.

The U.S. Is the World's Number One Source of Plastic Waste

In 2016, the average American produced 286 pounds of plastic waste, the highest rate per capita of any country on Earth

For "Overboard," artist Andy Yoder created more than 200 Nike Air Jordan sneakers using garbage.

Artist Fashions Nike Air Jordan 5s From Trash

Sculptor Andy Yoder's latest exhibition is a nod to the Great Shoe Spill of 1990 and the advances in ocean science that came from it

Theories surrounding the source of the pollution are still swirling.

Hundreds of Dead Animals Wash Ashore on Russian Beach After Reports of Mysterious, Toxic Sludge

Investigations are still underway, but experts theorize that leaked hazardous materials from military bases are to blame

Nine counties in California, Oregon and Washington had Air Quality Index values over 500, which is usually the maximum measurement on the scale.

West Coast Cities Experienced World’s Worst Air Quality in September

Minuscule particles in smoke may cause long-term health impacts, which will overlap with flu season and the Covid-19 pandemic

Plastics can take hundreds of years to naturally degrade in the environment, something this new combination of enzymes can accomplish in a matter of days.

Engineered 'Super Enzyme' Breaks Down Plastic

The new enzyme could allow for infinite recycling of common PET plastic used in water bottles and clothing

The total emissions released increased as temperatures rose, doubling when temperatures went from 104 degrees to 140 degrees Fahrenheit

On Hot Days, Asphalt Can Release as Much Air Pollution as Cars

During heat waves, pavement can reach 140 degrees Fahrenheit, which unleashes harmful particles into the air

Prototype biodegradable flip-flops made using algae.

Researchers Use Algae to Make Biodegradable Flip-Flops

The shoes break down in about 18 weeks under the right conditions

Dead Horse Bay gets its unsavory-sounding name from the numerous horse-rendering plants that operated along its marshy shoreline from the 1850s until the 1930s.

New York’s ‘Glass Bottle Beach’ Closed After Survey Finds Radioactive Waste

The Dead Horse Bay shoreline was a magnet for beachcombers and sightseers who came to peruse the eroding contents of 1950s landfill

A thick cloud of smoke floats up from the Notre-Dame Cathedral as it burns, on April 15, 2019.

Lead From Notre-Dame Fire Discovered in Parisian Beehives

The findings indicate that honey can provide important evidence of environmental pollution, scientists say

The Maya city of Tikal thrived for hundreds of years but was abandoned in the ninth century A.D.

Why Did the Maya Abandon the Ancient City of Tikal?

New research suggests mercury and toxic algae poisoned the settlement's reservoirs

Researchers are concerned about what the presence of microplastics in protected landscapes will mean for local ecosystems.

The Forecast in National Parks Is Cloudy With a Chance of Plastic Rain

New research finds America’s western national parks and wilderness areas receive more than 1,000 tons of plastic rain every year

The interstate was empty in San Francisco after stay at home orders were issued in California in early April.

Carbon Emissions Are Decreasing During the Pandemic but Could Bounce Back Fast

At the height of COVID-19 restrictions, daily carbon emissions declined 17 percent compared to 2019

People in France bike wearing masks down the "Rue de Rivoli."

How Cities Plan to Keep Traffic Out When Lockdowns Lift

Extended bike lanes and wider sidewalks are among solutions to keep car traffic down as people continue to avoid public transit

Reduced traffic in Los Angeles reveals a clear view of the San Gabriel Mountains beyond downtown.

Air Pollution May Make COVID-19 Symptoms Worse

Research linking air pollution to elevated death rates remains preliminary but scientists hope the pandemic spurs tighter air quality regulations

Evidence suggests “[t]he piles outside the walls weren’t material that’s been dumped to get rid of it,” says archaeologist Allison Emmerson. “They’re outside the walls being collected and sorted to be resold inside the walls.”

Analysis of Pompeii's Garbage Suggests the Ancient Romans Recycled, Too

The city's residents sorted waste materials for reuse in future projects, according to new research

A new analysis of insect abundance surveys finds the decline may not be as dire as previously thought.

New Study Gives a More Complex Picture of Insect Declines

The researchers gathered data from 166 surveys of insect abundance around the world, mostly conducted since the 1980s

Researchers have discovered an unexpected way that larger bits of plastic are transformed into microplastics in the sea: lobsters. (The study involved Norway lobsters, pictured here.)

Norway Lobsters Crush Ocean Plastic Into Even Smaller Pieces—and That's Bad

The crustaceans' guts pulverize plastics into tiny bits that can be consumed by even smaller creatures at the base of the ocean food chain

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