After you peel an orange, your fingers are probably sticky, a little bit greasy, and smell heavily of citrus. That's because orange peels have heavy amounts of limonene in them, an essential oil. Not only does limonene hydrate your skin and make your fingers smell like a Florida orange grove, it can also do something crazy to a rubber balloon!
Watch the video below and see a trick that'll surprise all your friends.video-player-present
(via Maricv 84)
Here's another fun fact about limonene: it's a hydrocarbon, meaning it's easily flammable. That means you could potentially start a rolling fire with lemon peels! Science is capable of some pretty crazy stuff!