We'll just have to clear some area, I suggest the quickest way would be with the giant orbital heat beam! :D (100% agree that getting into space is important,

We'll just have to clear some area, I suggest the quickest way would be with the giant orbital heat beam! :D (100% agree that getting into space is important, and that if we want to continue exponential growth we'll need more than one planet. In fact, we'll need more than all the planets and we fairly rapidly (in cosmic terms) hit the point where the available volume of our light cone isn't enough. Maybe indefinite exponential growth isn't something we should feel entitled to...)