I'm more curious / concerned about how we'll be able to manage all the resources needed to support another billion without stripping the earth to the point that

I'm more curious / concerned about how we'll be able to manage all the resources needed to support another billion without stripping the earth to the point that we find ourselves in a collapse because we've run out of water / food / oil / etc. Of course, the same thing was said when the global population hit 1 billion, and so forth... thus I do agree that given we're an innovative species there is a good chance we'll survive.