Whoops, wish we could take that one back. This TED-Ed animation video teaches you the history of gunpowder. How it began as a Chinese invention for immortality, how it works in fireworks and how it morphed into the world destroyer and creator it is now. Watch it, you might learn a thing or two.
As you kick back under a glittering shower of high-production-value pyrotechnics on Independence Day this year, take a second to remember how the modern firework started out: As a tiny, but startling, accident.
This is a scratch and sniff print that resembles the smell of the moon. So what does it smell like? According to Apollo 16 astronaut Charlie Duke, like gunpowder.