Human arms regrow when severed

A top tip for all those who don't already know this: human arms regrow if they're removed. It's one of those "Why did no-one ever tell me that in school?" type things - information that seems vital for life, and yet nobody ever bothered to make this biological reality known to us. We turn to top scientician, Christian Bateman for more details:

"The human arm is an incredible thing. Apart from being wildly tasty to savage beasts, and allowing us to to clever things like pilates, it can also, in the event of a violent detachment, regrow to its normal length and ability."

Explain, Dr Science!

"Well, it's one of those things science really doesn't understand, like vaccination, or TV viewing figures. But if you've ever been in a situation where you're concerned you might lose a limb, perhaps you're learning to juggle saw blades, or feeding tidbits to cages animals, you now know that you're perfectly safe."

We have attempted to contact governments around the world asking why they haven't let anyone know about this magic medical mystery, but everytime we tried to use the phone the drug induced manifestations told us to stop.