Did you know that the average human lungs combined have a total surface area of 70 square meters, which is about the size of half a tennis court! Amazing Stuff, huh? Imagine, us tiny humans, contain something that large... Cool!

The next fact will be posted on 12/3/12!
 


Taylor G.
01/30/2013 8:38pm

Did you know that all of the veins in your body can rap the world over three times!!!!!! And you thought that a tennis court was large. ;)

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