OMG OMG! A 9th Grader in Iraq wants to know, "how many cells are in brain?"
Here's an answer:
We have about 100 billion nerve cells. Read More
If you were to count one cell every second, it would take you more than 3,168 years to count up to 100 billion cells! That's a lot of cells.
Answered by Hiro Watari
Wow, the brain is so cool!
Hey, what's the one thing you wish you knew about the brain?