The Conversation

Did the Vikings use crystal 'sunstones' to discover America?

Author: The Conversation USA

Leif Erikson discovers AmericaChristian Krogh/Wikimedia Commons

Ancient records tell us that the intrepid Viking seafarers who discovered Iceland, Greenland and eventually North America navigated using landmarks, birds and whales, and little else. There’s little doubt that Viking sailors would also have used the positions of stars at night...

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