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]
If you're thinking of buying a new Ultra HD TV, then you're obviously investing that little bit extra because you want it to look its best. To do exactly that, you should also invest in a 4K Ultra HD Blu-ray player and some new 4K Blu-rays. Here are our 10 favourite 4K discs, all of which you can buy right now.