Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Diamonds can be shattered with a hammer.
-104
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One barrel of petroleum holds 42 gallons.
20
German chemists made a replica of a trophy the size of one molecule.
68
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Sound travels about 4 times faster in water than in air.
408