Nuclear bombs are easy to make, right? Find some uranium, shove in some explosives and — BOOM! — you’re quite literally done. Um, sorry, nope. The big problem in making a nuclear bomb is that you need enriched uranium, and that’s actually a real pain in the arse to make.
In this video, the engineering guy Bill Hammack explains why that’s the case — and why it means that, fortunately, nuclear weapons aren’t as widespread as you might expect. [YouTube]