wa7iut, 18 days ago waiting for the magnetic poles to flip! 😱 https://undark.org/2018/01/26/books-alanna-mitchell-spinning-magnet/
waiting for the magnetic poles to flip! 😱
https://undark.org/2018/01/26/books-alanna-mitchell-spinning-magnet/
peterhoneyman, 17 days ago @wa7iut
@wa7iut
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