You have no idea how much you need nitrogen-fixing bacteria

Nitrogen-fixing bacteria are a crucial, if largely unknown, part of our ecosystem. They're how plants and animals get nitrogen from the air.
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Canaries in the copper mine: Upper Clark Fork osprey decline leaves biologists wary

On July 8, three osprey chicks were abducted from their Warm Springs Pond nest by the Montana Osprey Project.

Survivor: Salmon Edition

Will different salmon species adapt before the climate votes them off the island?

Mining exposes Indigenous women in Latin America to high mercury levels

A recent investigation has found dangerously high levels of mercury among women from different Indigenous communities in four Latin American countries.

Plastic recycling could be more dangerous than you think

Efforts to end plastic pollution with recycling could leave people — and the environment — laden with poisonous chemicals, a new study has found.

Chemicals in plastic wastes contaminate food chain – study

Burning and improper disposal of plastic wastes lead to contamination of the food chain, especially in developing countries like the Philippines, a global study showed.

Chemicals in plastic wastes contaminate food chain – study

Burning and improper disposal of plastic waste leads to contamination of the food chain, especially in developing countries like the Philippines, a global study showed.


Nanomaterials are being discovered in living organisms

Carbon nanotubes and other microscopic particles are increasingly part of consumer goods. They’re also being found in organisms up and down the food chain.

Hundreds of fish species, including many that humans eat, are consuming plastic

As more and more plastic trash permeates the oceans, fragments are making their way into fish and shellfish – and potentially into humans.

Northern tree rings hold centuries-old air pollution records

Researchers are using northern trees to precisely trace levels of emissions. In Mackenzie Delta tree rings, you can find a history of the industrial revolution.

Photographer Gianmarco Maraviglia collects nurdles from beaches and photographs them larger than life

Photographer Gianmarco Maraviglia collected plastic pellets, known as nurdles, from several beaches in Greece and photographed them larger than life.

New research aims to uncover long-term effects of glyphosate spraying on forests

Every year, B.C. sprays about 10,000 hectares of forests with glyphosate as part of its reforestation program.

I ain’t afraid of no ghost fleas

When fish snack on 'ghost fleas,' the neurotoxin they accumulate poses a risk to human fish eaters.


Scientists studied five different types of seafood. 100 percent were contaminated with plastics

A new study that examined five different types of seafood found that traces of plastic contaminants were present in every single sample — suggesting that humans ingest a large amount of plastic pollution from eating seafood both wild and farmed.

'Grim work': Climate-change clock ticking on world's polar bears

The climate-change clock is ticking on the world's polar bears and a group of Canadian and U.S. scientists say they've determined when that time will run out.
From our Newsroom

Alabama PFAS manufacturing plant creates the climate pollution of 125,000 cars

The manufacturing plant responsible for PFAS-coated fast food packaging pumps out loads of a banned ozone-depleting compound along with "forever chemicals."

LISTEN: EHN's Pittsburgh reporter featured on "We Can Be" podcast

"I believe that true, well-told stories have the power to change the world for good."

Weaponization of water in South Asia

Climate change and unbalanced regional political power are driving an ongoing water crisis in Bangladesh.

Global action on harmful PFAS chemicals is long overdue: Study

"We already know enough about the harm being caused by these very persistent substances to take action to stop all non-essential uses and to limit exposure from legacy contamination."

Ocean plastic pollution

Too much plastic is ending up in the ocean — and making its way back onto our dinner plates.

Pennsylvania vows to regulate PFAS in drinking water—again—but regulations are at least two years away

The chemicals, linked to health problems including cancer and thyroid disease, have contaminated drinking water in Pittsburgh communities like Coraopolis and McKeesport.

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