By weight, Bone is five times stronger than steel.
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At YouTube Headquarters, employees can either take the elevator, stairs or slide.
13
In 1916, a US amendment was proposed to put all acts of war to a national vote. If you voted yes you would have to register as a volunteer for service in the United States Army.
5
It 'snows' metal on Venus.
13
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
35