A scorpion can hold its breath for up to 6 days.
19
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
Eminem repeated the 9th grade three times.
27
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Quality dark chocolate contains flavonoids which help reduced the risk of heart disease.
176
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
The average sperm cell swims at 8 inches per hour.
4