The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
German chemists made a replica of a trophy the size of one molecule.
68
Pumice is the only rock that floats on water.
14
Pure water (H2O) does not conduct electricity on its own.
46
Cold water weighs more than hot water.
93
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3