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Vikings were in North America by 1021 CE

Ars Technica » Scientific Method 2021-10-20

Summary:

An ancient cosmic ray event helped archaeologists pinpoint the date.

Link:

https://arstechnica.com/?p=1805958

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Tags:

age

Authors:

Kiona N. Smith

Date tagged:

10/20/2021, 17:33

Date published:

10/20/2021, 13:00