4.5 pounds of sunlight strike the Earth each day.
27
The bark of an older redwood tree is fireproof.
65
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Sound travels about 4 times faster in water than in air.
408
Out of all the senses, smell is most closely linked to memory.
146
Nylon is made from coal and petroleum.
42