Post #3732160

@mjd@mathstodon.xyz @pozorvlak@mathstodon.xyz they don’t expel earwax, this is one of the fascinating details that I do remember clearly from the book. It accumulates over their lifetime. Similar to tree rings, ear wax ends up as a record of their life and it’s possible to infer how much stress they were under by looking at the amount of cortisol trapped in it during that period. Great book!