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Dentists were interesting

20 Mar 2017, 10:48 UTC
Dentists were interesting
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Still in an echoey office, it’s episode 4001.  [MP3 Link]  Josie and Chris talk about New Jersey, bizarre disks found through citizen science and providing an excuse to mention TRAPPIST-1,  about bits of the solar system we barely understand including the livers and rakes of Titan.

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