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Mountains Made of Fossils
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Published April 22, 2025
The peaks in Guadalupe Mountains National Park—some of the highest in Texas—are made of a well-preserved fossil reef formed more than 250 million years ago.
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Stirrings at Mount Spurr
Published April 19, 2025
Despite its stately and serene appearance, the Alaskan volcano has shown signs of activity since spring 2024.
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The Staying Power of Sardinia
Published April 12, 2025
One of the largest islands in the Mediterranean, this region of Italy has developed a cultural and natural heritage all its own over the millennia.
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Mangrove Pioneers
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Published March 31, 2025
The right climatic and geographic conditions in the southeastern U.S. have allowed mangroves to migrate northward to Georgia.
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Tornadoes Rip Through Mississippi
Published March 27, 2025
Tracks of damage extended dozens of miles after 18 tornadoes plowed through several parts of the state.
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A Small Blue-Gray Marble
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Published March 12, 2025
A digital camera on the Blue Ghost lander looked back at Earth and captured this ethereal image.
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Large Fire Footprint on Faraway Amsterdam Island
Published February 26, 2025
Wildfire burned through unique landscapes and disrupted scientific research on this remote island in the southern Indian Ocean.
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The Cloudy Waters of Kachemak Bay
Published February 25, 2025
Bits of pulverized rock carried by Alaska’s glacial streams into the shallow, productive estuary transform the bay’s color and can affect some types of marine life.
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