This is how awesome science is – here is how to turn your urine into gunpowder.

Wait, how to make gunpowder from what? Is that even possible? Well it turns out that making gunpowder out of urine—and a number of other ingredients—is possible, if in a complicated and roundabout way. In fact, it even kind of makes sense. After all, in a post-apocalyptic world where ammo is scarce, urine is one of the most nonrenewable resources at your disposable. Time to start saving up that brass…