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Brilliant Bloom in the Baltic Sea
An explosion in the numbers of cyanobacteria transformed the Baltic Sea into a swirling canvas of green in summer 2025.
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Whirling Dust and Ancient Floods
Now a flat and dusty desert playa, Oregon's Alvord Desert once held an expansive lake that was the source of catastrophic outburst flooding.
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Arizona's Declining Groundwater
Decades of satellite observations show that the aquifers in the southern part of the state are ailing.
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Italyâs Majestic Mount Etna
The volcanoâs long history of eruptions has influenced eastern Sicilyâs physical topography as well as how people interact with the land.
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Rare Snowfall in the Atacama Desert
Snow infrequently falls in the high plains of northern Chile. And when it does, it doesn't last for long.
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Cloud Streets Over the Laptev Sea
The striking cloud formation developed over Arctic waters north of Siberia in July 2025 as frigid air met warmer open water.
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Wildfire Smoke Billows Over Northern California
Amid scorching heat and low humidity, the Green and Butler fires have burned tens of thousands of acres and choked nearby communities with smoke.
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