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Why did the Lincoln Memorial Reflecting Pool turn green? episode artwork

EPISODE · Jun 26, 2026 · 22 MIN

Why did the Lincoln Memorial Reflecting Pool turn green?

from Ask the Naked Scientists · host Dr Chris Smith

Why is Europe experiencing a heatwave? What happens if a being from a different dimension enters our dimension? Why are wombats able to produce square-shaped faeces? Can we live without sodium? Is there a scientific explanation for xenophobia? Why did the Lincoln Memorial Reflecting Pool turn into a green swamp? What causes early morning phlegm, even without a cold? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists

Episode metadata supplied by the publisher feed · Published Jun 26, 2026

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Why did the Lincoln Memorial Reflecting Pool turn green?

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