By weight, Bone is five times stronger than steel.
417
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
The first patented condom was meant to be reused!
47
Medical research has found substances in mistletoe that can slow down tumor growth.
32
Men have larger hearts; women's hearts beat faster.
77