Another possible way to make a super-tall structure: http://en.wikipedia.org/wiki/Space_fountain
Guns in Space. Will We Ever Run Out of New Music? When Will We Run Out Of Names? Will This Go Faster Than Light? How to build a Pole Building. 11 Things You Never Knew About The Earth. DISTORTIONS. This Is Not Yellow. What's the Tallest Thing We Can Possibly Build? What Does a 4D Ball Look Like in Real Life? Amazing Experiment Shows Spherical Version of Tesseract.