Scientists are now able to grow 'beating' heart tissue in a lab!
162
German chemists made a replica of a trophy the size of one molecule.
68
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Sound travels about 4 times faster in water than in air.
408
One cubic foot of gold weighs more than 1,200 pounds!
78
The bark of an older redwood tree is fireproof.
65
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57