Babies are born without knee caps.
78
The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
27
Blue eyes are the most sensitive to light, dark brown the least sensitive.
105
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
There was once an undersea post office in the Bahamas.
241
160 cars can drive side by side on the Monumental Axis in Brazil, the world's widest road.
39
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22