I am looking to undertake a "green" remodel of my Green Lake house, and I would like to have the finished product be as healthy as possible, both for myself and the environment.  What do you think are the most important priorities of "green" remodeling for my wellbeing and that of the planet?

I'm willing to do a sizable overhaul of my house, as a green home is a big priority for me.  My home is in good shape, but I definitely feel there are ways to improve its overall efficiency.  As you can see, I'm pretty comfortable kicking around the place, but I would feel better knowing I'm doing all I can to be a good steward.