The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
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
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The sun is 330,330 times larger than the earth.
75
Out of all the senses, smell is most closely linked to memory.
146
