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TIL Earth is the only known celestial body to have tectonic plates

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W77jB TIL in every whale's earwax is a record of its lifetime exposure to pollutants.
YpGLZ TIL that, after making a quip about dog food being Kosher, I discovered that there IS Kosher pet food being produced.
Kke4 TIL of the Candy Desk, a tradition of the US Senate since 1968, whereby a senator who sits at a desk near a busy entrance keeps a drawer full of candy for members of the body. The desk is currently supplied with candy made in Pennsylvania, including Milky Way bars, Mars bars, and jellybeans.
OGoNa TIL that bacteria can survive at least 3 years in the vacuum of space according to ISS experiments - giving support for pan-spermia theories
R7jZ1 TIL that it is likely that life could only form on Exoplanet that are like our Earth and are orbiting stars like our Sun. And we almost have the technology to detect them.