Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Sound travels fifteen times faster through steel than through air.
134
Balsa wood is classified as a hard wood!
41
Nearly 50% of the world's scientists are assigned to military projects.
71
The sun is 330,330 times larger than the earth.
75
Most dust particles in your house are made from dead skin!
67
Your brain is 80% water.
525
Pure water (H2O) does not conduct electricity on its own.
46