The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Pure water (H2O) does not conduct electricity on its own.
46
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The sun is 330,330 times larger than the earth.
75
The force of a suction cup is calculated using F=AP.
15
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16