Editor’s note: This article, distributed by The Associated Press, was originally published on The Conversation website. The Conversation is an independent and nonprofit source of news, analysis and ...

Add Yahoo as a preferred source to see more of our stories on Google. A modular, precast system of concrete 'rings' can be connected in different ways to build a range of models of energy-efficient ...

Despite being ubiquitous in countries around the world, particularly in Europe and South America, concrete homes are still fairly rare in the United States when compared to the hegemony of wood.