The average human heart pumps over 1,000 gallons a day, over 55 million gallons in a lifetime.
This is enough to fill 13 super tankers.
It never sleeps, beating 2.5 billion times in a lifetime.
The lungs contain 1,000 miles of capillaries.
The process of exchanging oxygen for carbon dioxide is so complicated that "it is more difficult to exchange O2 for CO2 than for a man shot out of a cannon to carve the Lord’s Prayer on the head of a pin as he passes by."
DNA contains about 2,000 genes per chromosome—1.8 meters of DNA are folded into each cell nucleus.
A nucleus is 6 microns long.
This is like putting 30 miles of fishing line into a cherry pit.
And it isn’t simply stuffed in.
It is folded in.
If folded one way, the cell becomes a skin cell.
If another way, a liver cell, and so forth.
To write out the information in one cell would take 300 volumes, each ...
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