Hi everyone! I've been doing some research on owner-built homes, wanting to do one of my own, and am wondering if someone has expertise to share on this topic. I absolutely love and support the idea of earthships as sustainable, environmentally-sound ways to build. But I'm wondering...has there ever been any research/other info out there on whether or not these homes are 'healthy' homes? As in, aluminum cans are obviously made with aluminum (a substance I don't want on or in my body)...chemicals in tires that maybe I don't want to be breathing in? Or maybe this isn't even something I should consider as an issue???