For the last hundred and fifty years or so, geologists have been trying to wrap their heads around the mystery: in some places, the geologic record just seems to jump by over billion years. And last week, a paper was published that may hold the answer to this mystery. Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at https://www.scishowtangents.org
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