Two weeks + some styrofoam and concrete + volunteers = two houses

All right, it's a bit more complicated than that, but not much. And it definitely looks like work. Go here to learn what some college students and others have been doing in Armenia. There's a link to a slide show at the bottom of the ncnnews.com article.

According to the article, Habitat for Humanity and the U.S. Agency for International Development (USAID) are looking at using the technology to build more homes and storage sheds. There's also a mention of negotiations underway to try to have the polystyrene blocks built in Iran.