19. The largest known prime number contains 41,024,320 digits. 20. Frogs breathe and drink through their skin. 21. A bullet ...

Talk about a bizarre feature of the human body: If you happened to swallow a razor blade, your stomach acid would dissolve it. Acids are ranked on a scale from zero to 14—the lower the pH level, the ...

These slow-moving, eucalyptus-eating marsupials native to Australia are beloved for their sweet demeanors and distinctly non-human adorableness. However, koalas do share one feature in common with ...

There's more to a flamingo than its bright pink feathers. Get to know these delightfully unusual birds with 10 fun facts — some of which may surprise you! 1. Flamingo nests are made of mud. A flamingo ...