Did you know there are serious risks to wearing shoes that don’t fit right? Or that scientists are worried about invasive ticks? What about the items you could buy in a medieval drugstore? All of these are topics from the most popular stories we published this week at National Geographic. Our top story sheds light on discoveries being made under an iconic castle. But don’t miss the world’s oldest neurologist answering the questions you submitted and our travel team’s feature on a laid-back Mexican beach town!  

—William O’Connor, Newsletter Editor 

The dig might have uncovered some of the earliest victims of the Black Death, and other tantalizing clues about medieval life in the citadel. 

Yesterday’s Discovery newsletter had a mistake in the attribution for the photo attached to our feature on human hibernation. It should have been credited to Rebecca Hale, National Geographic. 

Today’s newsletter was edited and curated by William O'Connor and produced by Amanda Petty. Let us know if you have suggestions and sign up here to get the Photo of the Week on Sundays.

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