Out of all the senses, smell is most closely linked to memory.
146
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Sound travels fifteen times faster through steel than through air.
134
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Aluminum used to be more valuable than gold!
84
One third of the electricity produced on earth is used to power electric light bulbs!
75
The sun is 330,330 times larger than the earth.
75