Mind blowing facts: there are more planes in the ocean than there are submarines in the skyThe more you know 🤯
Interesting mechanical fact:This is a GIF I made to help explain to my son this interesting mechanical fact. ..in the GIF, the gear on top is called a worm gear. It's driving the big sprocket. That's the only way it will work. It's not possible for the sprocket to turn the... See More »
