The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
German chemists made a replica of a trophy the size of one molecule.
68
Your brain is 80% water.
525
Nearly 50% of the world's scientists are assigned to military projects.
71
A ball of glass will bounce higher than a ball made of rubber.
73
Pumice is the only rock that floats on water.
14
Nylon is made from coal and petroleum.
42
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79