Sound travels fifteen times faster through steel than through air.
134
Out of all the senses, smell is most closely linked to memory.
146
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Liquid TIDE laundry detergent glows under a blacklight.
96
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Most dust particles in your house are made from dead skin!
67