Pumice is the only rock that floats on water.
14
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9