You find yourself in an airport or hotel room in another country, and you really need to charge your phone, camera or game system. But what is that strange-looking outlet? It has round holes! And ...

The holes on the prongs of your electrical plugs may look random, but there's a clear reason they were created and why they ...

This article about electrical outlets is republished here with permission from The Conversation. This content is shared here because the topic may interest Snopes readers; it does not, however, ...