Quote (Act1 @ Nov 21 2010 08:57am)
The human brain has about 100 billion neurons. A stack of 100 billion pieces of paper would be about 5000 miles high.
Bones are much more interesting in my opinion.
The production rate of red blood cells per day is approximately 200 billion.
If you use simple math, that is 2,314,814.815 million red blood cells produced per second.