You can't tickle yourself.
29
Human hair and fingernails continue to grow after death.
7
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
We share 70% of our DNA with a slug.
218
Your heart will pump about 212 million liters in its lifetime.
26