Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The sun is 330,330 times larger than the earth.
75
The storage capacity of human brain exceeds 4 Terrabytes.
140
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The smell of freshly cut grass is actually a plant distress call.
31