With today's high energy prices, you can't afford to let warm air leak out of your home. Learn how to fix drafty doors and windows and to identify other places in your house where heat is escaping. This hands-on workshop will review different weatherization products and how to install them. Instructor Paul Kiefer is on staff at the Building Materials Resource Center. He has advised hundreds of individuals and groups on home weatherization projects. The workshop will be held at a home in Cambridge. Check the website for details.