The force of a suction cup is calculated using F=AP.
15
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The average temperature at 40,000 feet above sea level is -60 F.
56
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Sound travels fifteen times faster through steel than through air.
134
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The average home creates more pollution than does the average car.
33