Spix’s disc-winged bats shrieked when they were first shown mealworms, a new food for them. Were they alarmed, or were they communicating their excitement to their fellow bats? Elisabeth King Tightly ...

Ever suddenly realize you had picked up certain words or ways of speaking from a close friend? Maybe they spoke to you in a certain drawl or twang, or used slang like “y’all” or “yinz,” and you ...