Ever for the reason that first homes have been constructed, folks have been looking for insulation supplies that might preserve them heat within the winter and funky in the summertime. Nearly all the pieces has been tried: algae, sod, asbestos, tar paper, rolled up newspaper, urea foam, and pink Owens Corning fiberglass wadding. A March 23 press launch from Oak Ridge Nationwide Laboratory says inflexible polystyrene board is a well-liked selection, however has environmental drawbacks. He says blowing brokers utilized in foam manufacturing, corresponding to hydrocarbons and hydrofluoro-olefins, find yourself within the environment and contribute to world warming. ORNL scientists say they’ve developed a aggressive and environmentally pleasant insulation different…