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The safety pin was patented in 1849 by Walter Hunt. He sold the patent rights for $400.       If the sun stopped shining suddenly, it would take eight minutes for people on earth to be aware of the fact.       The base of the Great Pyramid of Egypt is large enough to cover 10 football fields.       The highest point of the earth, with an elevation of 29,141 feet, is the top of       The world’s first speed limit regulation was in       The wristwatch was invented in 1904 by Louis Cartier.       A Saudi Arabian woman can get a divorce if her husband doesn’t give her coffee.       |
