Balsa wood is classified as a hard wood!
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Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Most dust particles in your house come from dead skin.
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