Earthships – love them, wish I lived in one – sustainable, eco living and off grid. They were first dreamed up and constructed in Taos, New Mexico. Canadians have adopted them – in BC and now one of the coldest places near an urban centre is building one, in Manitoba
Rubber tyres and dirt are the main construction materials – all recycled materials where possible, even water is reused at least 4 times – from drinking to cleaning and flushing toilets(grey water). earthship.com has plans for sale as well as lots of information.