Subject: This discovery solves a decades-old Arctic mystery: plus, what are these 1,300 strange circles on the sea floor?

Sender: National Geographic
Political Party: n/a
Country: United States
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From	National Geographic <[email protected]>
Subject	This discovery solves a decades-old Arctic mystery: plus, what are these 1,300 strange circles on the sea floor?
Date	January 16, 2025 7:31 PM

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