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
Sound travels about 4 times faster in water than in air.
408
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Only 8% of the world’s currency is physical money. The rest exists only on computers.
20
HP, Google, Microsoft, and Apple have one thing in common – apart from the obvious that they are IT companies. They were all started in garages.
165
You see your nose at all times, your brain just chooses to ignore it.
30
CAPTCHA stands for "Completely Automated Public Turing test to tell Computers and Humans Apart".
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