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Blast From the Past: Vredefort Crater
The world's oldest and largest known impact structure shows some of the most extreme deformation conditions known on Earth.
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Blast From the Past: A Modern Lake in an Ancient Crater
Famously visible from space, ring-shaped Manicouagan Lake was filled at the dawn of the Space Age when Canada dammed a river to flood a Triassic-aged impact crater.
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A Cosmic Explosion Over Siberia
On June 30, 1908, an incoming fireball exploded kilometers above Earth's surface, scorching and toppling large numbers of trees.
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A Dusty Vestige of the Old West
Owens Lake, an arid playa tucked between the Inyo Mountains and the Sierra Nevada in California, is the site of dust mitigation efforts.
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Western Mountain Snow Melts Fast and Early
A warm and dry spring in the Pacific Northwest quickly depleted the seasonal snowpack, raising concern over summer water supplies and wildland fire risk.
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Smoke Streams Over the Aegean Sea
Fierce winds carried plumes from fires burning on the Greek island of ChÃos southwest over the bright sea surface.
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Sizzling Start to Summer
The eastern United States sweltered under high heat and humidity in late June 2025, breaking temperature records across the Midwest and Northeast.
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