University Place

An Ancient Iron World

Special | 45m 40s

Clark Johnson, Distinguished Professor, Department of Geoscience, UW-Madison, discusses how iron formations were created three billion years ago. Johnson focuses on the impact the ancient “iron world” had on the evolution of early life on Earth and still has as we continue to mine this ancient ore.

Aired: 10/06/15

Rating: TV-G

Video has closed captioning.

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