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Scientists detect mysterious signal nearly 1 mile underground in South Dakota

3 verified updates • corroborated by 3 independent sources • tracked since September 2, 2026

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  Sep 02, 06:01 PM 2 sources: Yahoo, seattletimes.com

  Scientists detect mysterious signal nearly 1 mile underground in South Dakota
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  Sep 02, 07:01 PM 2 sources: The Seattle Times, Yahoo
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  Sep 03, 01:01 AM 1 source: Yahoo