The great wall of China is 1,400 miles long!
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Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
22
Pierre Jaquet-Droz, a watchmaker, 240 years ago invented a robot that could write, and the parts could be interchanged to say whatever you want.
13
In Ancient Greece, if a woman watched even one Olympic event, she was executed.
40
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
The first telephone book was one page long and had only 50 names in it.
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