The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
The average temperature at 40,000 feet above sea level is -60 F.
56
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Iron weighs more after it rusts.
68
A ball of glass will bounce higher than a ball made of rubber.
73
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16