The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
The storage capacity of human brain exceeds 4 Terrabytes.
140
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Pure water (H2O) does not conduct electricity on its own.
46
Nylon is made from coal and petroleum.
42
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199