Bat poop—yes, bat poop—is far more fascinating than you might think. You probably don’t give it much thought (unless it’s in your attic), but believe it or not, bat droppings have shaped history, ...

The patients: A 59-year-old man (patient one) and a 64-year-old man (patient two) in Rochester, New York The symptoms: Patient one was initially admitted to the hospital for respiratory failure after ...