The full moon causes a tidal wave to roll up the Amazon river once in day and once in night for a period of only three weeks in a year. This results in continuous 4m high wave that can be surfed for up to 13km.
14
Tae Kwon Do is only around 60 years old.
64
During his or her lifetime, the average human will grow 590 miles of hair.
69
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
-64
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30
American car horns beep in the tone of F.
66