No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
-64
The average IQ is 100, while 140 is the beginning of genius IQ.
140
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Like fingerprints, everyone's tongue print is different.
250
A quarter has 119 grooves on its edge, a dime has one less groove!
34