A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A ball of glass will bounce higher than a ball made of rubber.
73
Cold water weighs more than hot water.
93
The bark of an older redwood tree is fireproof.
65
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51