More than 50% of Americans fall asleep on their sides.
86
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
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
The scent of women’s tears temporarily reduces sexual arousal and testosterone production in men.
12
It takes about 63,000 trees to make the newsprint for the average Sunday edition of The New York Times.
-11
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
More Americans have died in car accidents than have died in all the wars ever fought by the United States.
55
It is impossible to hum if your nose is plugged.
366