During his or her lifetime, the average human will grow 590 miles of hair.
69
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
The mile is Latin for 1,000. The number of paces it took the average Roman!
36
160 cars can drive side by side on the Monumental Axis in Brazil, the world's widest road.
39
It takes 492 seconds for sunlight to reach the Earth!
44
Babies start dreaming even before they're born.
134
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
