TANKO SCience

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BRain FaCTs

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Ouates facts

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Reference:www.brainyquote.com/quotes/topics/topic_inspirational.html

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EYE,,,@

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WHALE NoiSE,,.,

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If the human population held hands around the equator

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Well, according to Leonado da Vinci's Vitruvian Man, your arm span equals your height.  Based on this you need a few numbers (and lots of approximation and assumptions!) to get the answer:

• World population: 7.014bn est

• Earth's circumference: 40,075km

• Average human height: 1.7m

(7,014,000,000 people * 1.7m) / 40,075,000m = 297.54 times

Obviously this is incredibly inaccurate as: 

• World population is constantly changing
• I based human height on an average of a UK male and female when in reality it varies across the world
• I also made the assumption that we could all hold hands 'as the crow flies' which implies a bit of walking on water!