Most dust particles in your house are made from dead skin!
67
Sound travels fifteen times faster through steel than through air.
134
Out of all the senses, smell is most closely linked to memory.
146
In zero gravity, a candle's flame is round and blue.
16
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Sound at the right vibration can bore holes through a solid object.
134