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Nerdy Curio

December 9, 2019

Subtle Ancient Footprints Come To Light

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Today's Nerdy Curio is brought to you by 60-Second Science. Ground penetrating radar can detect tiny density differences that lead to images of ancient footprints impossible to discern by eye.

-- Read more on ScientificAmerican.com

Aired November 30, 2019

All 60-Second Science content is available at www.scientificamerican.com

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