"Follow The King of Random for more exciting experiments, life hacks, and creative science projects. From crazy builds to fun DIY ideas, we test wild concepts and bring science to life in unexpected ...

Ever noticed that a rubber band gets warmer when it’s stretched ... For more thermodynamic fun, check out [Al Williams] recent article about building a DIY heat pipe.

Sounds like fun! Aside from powering world record attempting radio controlled aircraft, did you know that you can build a rubber band powered refrigerator? It’s true!