May be overkill for a simple "hi how's going" email, but relevant in almost any other context:
https://science.sciencemag.org/content/369/6509/1383 …pic.twitter.com/FGX7CcOQbP
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d18 O is oxygen isotopes, d13 C is carbon isotopes, in the carbonate shells of benthic foraminifera, which those magicians scoop up from the seafloors to do date them & do fancy analysis of environmental paramters with:pic.twitter.com/3vN8PvJj3K
* parameters
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