Saturday Stories: Horseshoe Crabs, Math Proofs, and Fentanyl Addiction

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Caren Chesler in Popular Mechanics on the irreplacable medical marvel that is horseshoe crab blood.

Natalie Wolchover in Wired on the retired German statistician who solved one of mathematics most elusive proofs.

Darryl Green (as told to Katherine Laidlaw) in Toronto Life details his journey from successful ER physician to a fentanyl addiction.