The other epidemic: What’s killing the wild salmon?

A virus that flourishes in fish farms is now threatening wild populations. With hundreds of millions of dollars at stake, are business interests leading to government inaction?
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25,000 barrels possibly laced with DDT are found off California coast

One researcher said the number of discarded drums far exceeded his expectations. “It was hard to wrap my head around the density of targets,” he said.

On the water in Alaska, Where salmon fishing dreams live on

Each summer, salmon begin their journey back to the rivers where they were spawned. Alaskan fishermen, along with whales, eagles and bears, share in the abundance.

Honey detective work raises fears for bees

Pollinators risk running short of food as wildflowers disappear in a "green desert", experts warn.

Insect populations suffering death by 1,000 cuts, say scientists

'Frightening' global decline is 'tearing apart the tapestry of life', with climate crisis a critical concern.


Migratory river fish populations plunge 76% in past 50 years

Decline in species such as salmon harms entire ecosystems and livelihoods, say researchers.

EPA scales back requirements for pesticide testing on fish

The EPA will allow pesticide producers to forego certain tests which can indicate whether chemicals accumulate in fish and enter the food chain.


The productive power of poop

Referred to in polite company as a "marine subsidy," otter feces are a key fertilizer on small islands.

The sound of icebergs melting: my journey into the Antarctic

Not long after Antarctica recorded some of its highest-ever temperatures, I joined a group of scientists studying how human activity is transforming the continent.


University of Michigan study finds importance of individual fish urine

A study led by the University of Michigan finds the "power of fish pee" and how individual fish are promoting healthy ecosystems.

We’ve been systematically underestimating sea otters’ historical habitat

Estuaries once harbored thousands of otters, and now conservationists want to extend recovery efforts to California's largest estuary: San Francisco Bay.

The macabre science of mass animal die-offs

Researchers are replicating “mass mortality events” with pig carcasses. The ecological consequences could hint at what's happening in Australia right now.

Mayfly numbers drop by half since 2012, threatening Midwestern food chain

Mayflies, which form swarms in the billions that are visible on weather radar, are in steep decline, mirroring the plight of insects worldwide.

Skinny whales

The mystery behind emaciated ‘zombie whales’ stranding on the West Coast in 2019 is still unsolved, and there are troubling signs for 2020.
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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