A house made of Styrofoam?
Sounds flimsy. But spray it with a new brick-like concoction called Grancrete, and it's virtually indestructible. Invented by scientists at Argonne National Laboratory near Chicago and builders at Casa Grande, a construction firm
in Mechanicsville, Virginia, Grancrete is twice as strong as structural concrete and won´t leak or crack. It's also affordable: When the first bags roll off the production line later this month, builders will be able raise a home for $10 a square foot, compared with $150 for a standard U.S. home.