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]
Video. Smoke, fire, chaos. That's what happens when a freight ship's anchor loses control and dives straight into the ocean. The chains just start spinning wildly and the friction of the metal goes nuts and there's really no way to stop it other than to just let it continue to drop and burn.
What will the family dinner of the future look like? According to the 1981 kids' book Tomorrow's Home, it's filled with robots, computers, and tasty synthetic foods. Except upon closer inspection, everybody looks depressed as hell.