The Great Wall of China is a lot Greater than we thought

How much greater? More than twice as great! A preliminary survey conducted in 2009 estimated that the fortifying structures that comprise the wall measured 8,850km (about 5,500 miles); now, the first attempt to directly measure the wall in its entirety has revealed that it is, in fact, 21,196.18 km long — that's over… » 6/06/12 10:38am 6/06/12 10:38am