Do you know This Is Colossal? You should. It's an arts site, but one that covers more than just pretty things. What Buzzfeed is for dumb lists that make you go "Awww," (Ten Cutest Cats etc), Colossal is for things that make you go "Damn. Cool."
Today's example (via my brother): Prince Rupert's drop. Plop molten glass into cold water and it creates a teardrop shape. The drop can't be shattered with force, but nick the skinny end, and the thing explodes outward with force. It looks like it's shattering, but it's actual the mechanical equivalent of the chemical reaction that causes an explosion. Glass go boom. Watch the video; it's rad. And bookmark Colossal.