If you’ve ever been caught in the rain, it probably wasn’t a big deal, right? Lucky for us, rain typically falls from the sky in small droplets. Listener Joe was wondering why that is, so we reached out to Monique Robinson of Mississippi State University to help us find the answer.

Got a Moment of Um question that’s raining on your parade? Send it to us at BrainsOn.org/contact, and we’ll help weather the storm.