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Pollution

Environmental toxicologist Danielle Stevenson spreads soil and wood chips inoculated with fungi at a polluted lot in Los Angeles.

Can Scientists Harness the Magic of Mushrooms to Clean Up Polluted Landscapes?

Researchers and grassroots activists are working with fungi to restore damaged environments

For 25 of the 26 years the American Lung Association has reported State of the Air, Los Angeles—pictured here in smog—has been declared the city with the worst ozone pollution in the United States.

Nearly Half of Americans Still Live With High Levels of Air Pollution, Posing Serious Health Risks, Report Finds

The most recent State of the Air report by the American Lung Association found that more than 150 million Americans breathe air with unhealthy levels of ozone or particle pollution

Chattanooga was once one of the most polluted cities in the country. Now, it's North America's first National Park City.

Chattanooga Just Became North America’s First National Park City. Here’s What That Means

The designation was awarded by a London-based charity that aims to make cities more like national parks: “greener, healthier and wilder”

Researchers Daniel Cerveny and Marcus Michelangeli collecting salmon from the Dal River in Sweden.

Salmon Are Being Exposed to Our Anti-Anxiety Medication, and It’s Making Them Take More Risks, Study Suggests

Atlantic salmon exposed to a common anti-anxiety drug migrate faster, according to new research. That’s not necessarily a good thing

An aerial view of dredges at an illegal gold mining area in the Amazon region of Peru.

Tree Rings Bear Witness to Illegal Gold Mining Operations in the Amazon, New Study Finds

Mercury concentrations in fig trees could provide useful information about mining activity in the rainforest over time

Crops around the world—including corn, wheat and rice—might suffer from decreased yields as a result of microplastics interfering with photosynthesis, according to a new study.

Microplastics Are Making Photosynthesis Harder for Plants—and That Could Slash Crop Yields, Study Suggests

On average, these little particles could reduce photosynthesis in plants and algae by up to 12 percent, according to the paper

In one nest, researchers found a McDonald's McChicken container from 1996.

These Bird Nests Are Full of Trash, Including Some That’s 30 Years Old

Scientists studying Eurasian coots in Amsterdam found layers of decades-old garbage in their urban nests

A SpaceX Falcon 9 rocket launches on November 18, 2024. Debris that recently landed in Europe came from a Falcon 9 launch this month.

SpaceX Rocket Stage Burns Up Over Europe and Crashes in Poland, While Blue Origin Debris Washes Ashore in the Bahamas

The SpaceX rocket failed to deorbit properly, and the Blue Origin debris had already landed as planned in the ocean

The earliest traces of lead pollution the researchers identified were 5,200 years old.

New Research

Oldest Known Evidence of Lead Pollution Found in Ancient Greece

New research has uncovered the earliest traces of lead contamination caused by human activities, linking the development of ancient metal smelting practices to long-term environmental change

Researchers found higher levels of microplastics in brain tissue than in liver and kidney tissue.

The Human Brain May Contain as Much as a Spoon’s Worth of Microplastics, New Research Suggests

The amount of microplastics in the human brain appears to be increasing over time: Concentrations rose by roughly 50 percent between 2016 and 2024, according to a new study

Nepal is raising the fee for the first time in about a decade.

The Price to Climb Mount Everest Will Rise to $15,000 This Year

Foreign climbers who want to try reaching the top of the 29,032-foot-tall peak will face higher permit fees in Nepal starting in September

The endangered Woodville Karst cave crayfish (Procambarus orcinus)

Freshwater Animals Are More Fragile Than Thought, With Nearly a Quarter Threatened With Extinction, Study Finds

Species in Lake Victoria, Lake Titicaca, Sri Lanka’s Wet Zone and the Western Ghats of India are particularly vulnerable to the effects of agriculture, human infrastructure and climate change, per the paper

At the same time as the Romans were building the Colosseum, they were also breathing in high amounts of toxic lead from silver mining and smelting operations.

Ancient Romans Breathed in Enough Lead to Lower Their IQs, Study Finds. Did That Toxin Contribute to the Empire’s Fall?

Using Arctic ice core samples, researchers estimate silver mining and smelting released enough lead during the Pax Romana to cause a 2.5- to 3-point drop in IQ

With its clear, dark skies, Colorado's Browns Canyon National Monument is an ideal spot to admire planets, constellations and the Milky Way.

A New Dark Sky Park in Colorado Offers a Front-Row Seat to the Cosmos

This week, Browns Canyon National Monument, a 21,586-acre protected natural area in central Colorado, achieved International Dark Sky Park certification

A policeman uses flares to guide traffic during the Great Smog of 1952.

On This Day in History

How an Extreme Combination of Fog and Air Pollution Brought London to a Standstill and Resulted in Thousands of Fatalities

On this day in 1952, buses stood still, cars were abandoned in the street, and residents couldn’t see even a few feet in front of themselves as the lethal Great Smog descended on the city

Lake Tahoe's Emerald Bay is one of the sites where telephone cables were recently removed from.

Crews Remove Miles of Abandoned, Lead-Coated Telephone Cables From the Bottom of Lake Tahoe

The cables have been resting on the lakebed for decades, raising fears from environmentalists and residents about possible lead contamination

A Hickory Nut Gorge green salamander rests on a log.

Hurricane Helene Battered the ‘Salamander Capital of the World’ With Floods and Landslides. Will the Beloved Amphibians Survive the Aftermath?

The storm decimated a region rich with dozens of species already struggling with habitat loss and disease

Researchers collect exhaled breath from a wild bottlenose dolphin during a health assessment conducted by the National Marine Mammal Foundation and its partners in Louisiana's Barataria Bay.

Scientists Have Found Microplastics in Dolphin Breath for the First Time

Each of the 11 dolphins sampled exhaled at least one suspected particle of microplastic, which researchers say “highlights how extensive environmental microplastic pollution is”

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Here’s How Weather Balloons Can Harm Marine Animals

Latex balloons designed to collect high-altitude data can become a threat after they burst

Two lynx shelter from the wind behind their parent, who looks into the camera.

See 15 Winning Images From the Wildlife Photographer of the Year Contest

Breathtaking shots shine a light on the wonders of wildlife and the threats that human activities pose to the natural world

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