Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Aluminum used to be more valuable than gold!
84
The smell of freshly cut grass is actually a plant distress call.
31