Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
On average people fear spiders more than they do death.
447
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Steve Jobs never wrote a single line of programming code.
16
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
Caffeine boosts memory.
405
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
A dairy cow can produce more milk when listening to music.
446