Fish form orderly queues in emergencies

When evacuating through narrow spaces in sketchy situations, schools of neon tetra fish queue so that they don’t collide or clog up the line. Scientists interpreted this behaviour as showing that fish can respect social rules even in emergency situations, unlike us humans.

Snails have teeth

Between 1,000 and 12,000 teeth, to be precise. They aren’t like ours, though, so don’t be thinking about snails with ridiculous toothy grins. You’ll find the snail’s tiny ‘teeth’ all over its file-like tongue.

Your nails grow faster in hot summer

This is probably due to increased blood supply to the fingertips. It could also be because you’re less stressed while on holiday so less likely to gnaw away at ‘em.

Published in Dawn, Young World, October 11th, 2025