Most dust particles in your house are made from dead skin!
67
Diamonds can be shattered with a hammer.
-104
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
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
Iron weighs more after it rusts.
68
The bark of an older redwood tree is fireproof.
65
In zero gravity, a candle's flame is round and blue.
16