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Asteroid Strike

PORTRAITS by Deborah Sisum

May 6, 202526:14Arts

Geologist Walter Alvarez was working away on some limestone samples in Gubbio, Italy, when he became intrigued by an odd layer of rock. He was looking at the K-T boundary. Underneath it, there are dinosaur fossils. Above...

About This Episode

Asteroid Strike is an episode from PORTRAITS by Deborah Sisum. Geologist Walter Alvarez was working away on some limestone samples in Gubbio, Italy, when he became intrigued by an odd layer of rock. He was looking at the K-T boundary. Under...

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Published May 6, 2025, 26:14 long, audio available.

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