Pyramids.

Science Weekly | February 2, 2006 | Copyright

Background

"Man fears time, yet Time fears the Pyramid" is an ancient Arab proverb. For over 4,700 years, humankind has observed the Egyptian pyramids. Before the Eiffel Tower was built in 1889, the Great Pyramid of Giza was the tallest structure in the world. Why the pyramids were built and how they were constructed are questions still raised today.

Of all known structures, the pyramid is one of the most stable. Many ancient pyramids are built with a uniform square base and equilateral triangle sides. Windstorms and earthquakes have rumbled through ...

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