Ask an Opossum

Hi! I’m Phi, Xplor’s mail possum. I know a lot about nature. If you have a question, email me at AskPhi@mdc.mo.gov.

Q: Why do fireflies glow?

From Reese, age 12

A: A firefly’s twinkling tush is like a chemistry lab. Various ingredients mix together, causing a reaction that makes light. Unlike a light bulb, the glow gives off little heat. Which is good because the firefly doesn’t want its bottom to burn up! Fireflies use their blinky backsides to chat with each other in the dark. A male blinks: “Here I am. Do you like me?” A female blinks back if she spots a male she fancies.