Small pests, big problems: The global spread of bark beetles.

Warming temperatures are fueling the expansion of pine and spruce beetle outbreaks across North America, Europe, and Siberia, ravaging tens of thousands of square miles of woodlands. Scientists warn that some forest ecosystems may never recover.

Small Pests, Big Problems: The Global Spread of Bark Beetles

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Northern lights: Large-scale solar power is spreading across the US.

Northern Lights: Large-Scale Solar Power is Spreading Across the U.S.

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Jerold Paterson/flickr

The uncertain future of puffin for dinner.

A wheel of wings spins around Grímsey Island, Iceland’s northernmost outpost. This eyebrow of land 40 kilometers above the mainland crosses the Arctic Circle. It’s home to some 70 residents, with one street, a tiny grocery store, a slash of airstrip roughly a third the length of the island, and a signpost pointing to the 66°33’ N parallel, across which tourists drive golf balls into the Arctic. In the brief high North summer, the island belongs to seabirds. Thousands and thousands of kittiwakes, puffins, Arctic terns, and more transform Grímsey into a bird nursery bustling under the constant light of the midnight Sun. Birds nestle in sea cliffs, brood in wildflower-filled meadows, patrol rocky burrows, and raft on the cold North Atlantic waters. And they cluster on the tarmac, erupting in clouds when planes ferrying day-trippers circle in.

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As groundwater dwindles, a global food shock looms.

By mid-century, says a new study, some of the biggest grain-producing regions could run dry.

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Why cougars are coming to town.

Cougars will become increasingly common visitors to Southwestern cities like Las Vegas in the next few decades as climate change drives their prey to greener urban pastures, a new study suggests.

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One of the world's most unusual plants is disappearing.

Overlooking the lava spires of Lake Mývatn, inside an old white farmhouse, in a jar by the window, slumped in a cloudy green bath, Iceland’s last living lake ball is slipping away.

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Winged Warnings: A perilous journey

The woman cowers inside a phone booth as a fury of birds tears through town. Demented seabirds hurl themselves at the windows, cracking the glass. Outside, beaks and claws swirl over bloody bodies in the streets.

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Cheryl Katz

Winged Warnings: Empty nests of the North

FLATEY ISLAND, Iceland – When the days grew long, seabirds flocked to this hamlet on the edge of the Arctic to rear their chicks under the midnight sun.

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From our Newsroom

Hormone-mimicking chemicals harm fish now—and their unexposed offspring later

Fish exposed to harmful contaminants can pass on health issues such as reproductive problems to future generations that had no direct exposure.

America re-discovers anti-science in its midst

Fauci, Birx, Redfield & Co. are in the middle of a political food fight. They could learn a lot from environmental scientists.

Roadmap points Europe toward safer, sustainable chemicals

EU Commission releases ambitious strategy for getting hormone-disrupting chemicals out of food, products, and packaging.

Exempt from inspection: States ignore lead-contaminated meat in food banks

Hunter-donated meat provides crucial protein to US food banks. But an EHN investigation found a lack of oversight that could result in potentially hundreds of thousands of lead-contaminated meals this year.

How Europe’s wood pellet appetite worsens environmental racism in the US South

An expanding wood pellet market in the Southeast has fallen short of climate and job goals—instead bringing air pollution, noise and reduced biodiversity in majority Black communities.

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