Find out why outdated technology is changing the landscape of your house.  And learn how to build a retaining wall from the experts at This Old House.  Plus get the answers to your home improvement questions about kitchen countertop options, finishing basement ceilings, termite elimination, replacing decking , cleaning walls after wallpaper removal, installing new plumbing in existing house, fixing cracks in concrete, roof replacement, tankless water heater installment, regulating heat and air in room additions.