DENVER (AP) — Businesses and lawmakers are trying to address the U.S. affordable housing crisis by turning to alternative ways to build homes. These include 3D printing houses out of concrete, building homes in a factory and shipping them to their final destination, and even using the hemp plant in construction. The 3D printing technology is far off from making a dent in the crisis, but proponents hope its speed in building walls can bring down construction time and costs. Modular and manufactured homes, built inside a factory, are gaining ground in the U.S., with homes built in a matter of days. Hemp, a plant related to marijuana, has also shown promise when combined with other materials to build more cheaply and efficiently.… Continue Reading