The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
In zero gravity, a candle's flame is round and blue.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16