"Raising the Dead" about cave diving - https://www.outsideonline.com/1922711/raising-dead (ignore the sentence or two at the beginning about ghosts)
"The Paradox of the Proof" introduced me to Mochizukis "proof" of the ABC conjecture - http://projectwordsworth.com/the-paradox-of-the-proof/
"The Mastermind": Evan Ratliffs series of articles on criminal Paul Le Roux, basis for the book of the same name - https://magazine.atavist.com/category/Mastermind/