http://www.damninteresting.com/?p=926"
...Though it has long been clear that Earth 1.0 is in need of an upgrade, it was not until a few years ago that someone began to take the notion seriously. In 2004, at a respected international design exhibition called the Venice Architecture Biennale, a young artist and architect named Christian Waldvogel displayed his plans for total global annihilation and the creation of Earth 2.0...."
I think this is very, very out landish but a very interesting idea none the less. I don't doubt that one day we will have the technology to do a feat such as this. The only problem I see is the people. I'm positive feuds and tifts will still exist amongst us. How will we keep military forces up without completely killing ourselves before Earth 2.0 is ready? Everything will change as well. Entertainment, religion, weather, medicine, everything. If something like this is ever enacted, I hope I'm dead. I see failure written all over it.