Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
In October 1997, when Internet Explorer 4.0 was released, some Microsoft employees left a giant "From the IE team... We Love You" on Netscape's lawn.
9
2% of Europeans lack the genes for smelly armpits.
6
Sloths take two weeks to digest their food.
243
Group "brainstorming" makes each individual in the group less creative and doesn't work as efficiently as the same number of people working alone and then later pooling their ideas.
10
Chocolate is lower in caffeine than tea, coffee and coca cola. A one ounce bar of chocolate contains about 6mg of caffeine, whereas a five ounce cup of regular coffee contains over 40mg.
114