Saturday, May 24, 2008

The Wisdom of the Ages

One of the greatest inventions of the Roman empire was concrete. When the empire collapsed the knowledge of concrete was lost for nearly two thousand years. Today our societies couldn't function without it.

But what of the engineering behind Stonehenge or the great pyramids? Is that too just a matter of lost knowledge? Watch this guy, Wally, show how he can single-handedly build his own Stonehenge.

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