Former Vice President Al Gore is practicing what he preaches. There is a rightie story that has been touted about Gore's Tennessee mansion having a huge carbon footprint. However, over the past year or two, Gore has been retrofitting the 80 year old building to be energy efficient, including rainwater recycling, adding solar panels, installing geothermal heating, and switching from incadescent lighting. No doubt, it is hard to make a building that old as green as a new house could be, but the former Veep is indeed living by what he preaches. Of course, the Gore bashers would rather criticize the messenger than take on his message, but this is one area where he shouldn't be criticized. Also bear in mind, this is not just a home, but the offices where he operates his ventures. CLICK HERE for the full story. EXCERPT: NASHVILLE, Tennessee (AP) -- Al Gore, who was criticized for high electric bills at his Tennessee mansion, has completed a host of improvements to make the home more energy efficient, and a building-industry group has praised the house as one of the nation's most environmentally friendly. The former vice president has installed solar panels, a rainwater-collection system and geothermal heating. He also replaced all incandescent lights with compact fluorescent or light-emitting diode bulbs -- even on his Christmas tree. "Short of tearing it down and staring anew, I don't know how it could have been rated any higher," said Kim Shinn of the U.S. Green Building Council, which gave the house its second-highest rating for sustainable design.