Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Sound at the right vibration can bore holes through a solid object.
134
Nearly 50% of the world's scientists are assigned to military projects.
71
Out of all the senses, smell is most closely linked to memory.
146
Balsa wood is classified as a hard wood!
41
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
In zero gravity, a candle's flame is round and blue.
16
A cesium atom in an atomic clock beats over nine billion times a second.
43