Pi can be used to measure many different things including hat size | Hey Ray
If you ever bought a fitted hat, you have had Pi on your head! You may have seen the number on the inside of the hat showing ...
The Amazing Times on MSN5mon
Big-Headed Babies Are More Likely To Be Intelligent
Babies with a head circumference between 12.5 and 14 inches are more likely to demonstrate higher intelligence. This ...