Opal is a hydrated amorphous form of silica. Its water content may range from 3% to 21% by weight, but is usually between 6% to 10%. Because of its amorphous character it is classed as a mineraloid, unlike...
13 Animated Gifs of Animal Facts
QI (Quite Interesting) is a British comedy panel game television quiz show created and co-produced by John Lloyd, hosted by Stephen Fry, and featuring permanent panelist Alan Davies. Most of the questions...
15 Super Skinny Buildings in the World
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When land is expensive or in short supply, smart real estate developers don’t get down, they look up. But, long, thin buildings are more expensive to construct because their shape requires more exterior...
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