Earth's core may have stopped spinning and be switching directions.
Don't worry. We're not all going to die. This actually appears to happen every few decades and all it does is create small variations in the length of the day, ones we don't really notice.
Oh, and there may be multiple cores like a Russian doll.
Their guess is it changes direction about every 35 years, but other researchers have different figures.
So, no big deal, but fascinating. Does it slightly impact earthquake frequency? What else might it impact? Tides? Weather?
Or nothing at all?
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