Apparently the sky is not high enough for the world’s 13th richest man, Prince Al-Waleed bin Talal al-Saud. The multi-billionaire, whose fortune Forbes estimates at $20 billion, last year bought a $320 million double-decker Airbus A380 to serve as his “Flying Palace”. Now, according to UK-based news reports, Middle East Economic Digest and al-Saud’s Kingdom Holding company website, he is looking to build a very tall building in Jeddah. Rumor has it that the tower will be a mile high. That is 1,600 meters, or just a little over one and a half kilometers. It would be more than twice the height of Burj Dubai, which is currently the tallest man-made structure on earth. But the prince, Kingdom Holding, and the contractors and companies involved in what Kingdom Holding calls, mysteriously, “The Jeddah Project,” are keeping very quiet about it. Only a single press release on the company’s website, from