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July 22, 2025 Weekly News

Latest Images of the Day view the archive

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.       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.       Arizona's Declining Groundwater Decades of satellite observations show that the aquifers in the southern part of the state are ailing.       Italy’s Majestic Mount Etna The volcano’s long history of eruptions has influenced eastern Sicily’s physical topography as well as how people interact with the land.       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.       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.       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.       Recent Blog Posts             Earth Matters July Puzzler Your challenge is to tell us the location of the satellite image and why it is interesting.

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