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KTerra Knowledge Tree

The KTerra topic hierarchy is designed to make browsing green and sustainable information easy and fun. Just expand and collapse each node like any "tree" structure. The further down the tree you go, the more details about a particular technology or service you'll find. Clicking on an active link takes you to a detailed article on the subject. From there, you can find vendors and organizations in your area that are associated with that topic.

Knowledge Tree
- Energy Production
  - Solar Energy
    - Photovoltaics
    - Solar Cell
    - Solar Hot Water Panel
    - Solar Electric Analysis
  - Wind Energy
    - Wind Turbine
  - Public Utility
    - Electric Utility
    - Natural Gas Utility
    - Heat Utility
  - Geothermal Energy
    - Geothermal Heat Pump
  - Water-based Power
  - Portable Generator
  - Waste Energy Production
  - Bio Energy Production
    - Biomass Energy Production
    - Biofuel Production
  - Energy Analytics
    - Energy Efficiency Analysis
  - Energy Storage
    - Microgeneration
    - Battery Banks
    - Charge Controller
    - Electrical Inverter
    - Grid Tie Inverter
    - Switched-mode Power Supply
- Home Qualities
  - Architectural Style
  - Orientation
  - Construction Types
    - Adobe Construction
      - Pressed-block Construction
      - Mud Adobe Construction
      - Super Adobe Construction
      - Cob Construction
      - Rammed Earth Construction
    - Dome Construction
    - Earth-based Construction
    - Pre-fabricated Construction
      - Steel Construction
  - Construction Materials
    - - Insulating Concrete Forms
    - Exterior Walls
      - Structural & Framing
        Engineered Lumber
        
        Finger Joined Materials
        
        Panelized Construction
        
        Structural Insulated Panels
      - Sheathing
        Gypsum Sheathing
        
        Oriented Strand Board
      - Exterior Finishes
        Cement Finishes
        
        Stucco
        
        Recycled Content Finishes
      - Construction Weatherization
    - Interior Walls
      - Drywall
    - Ceiling Materials
    - Roof Materials
      - Metal Roofing
      - Recycled Content Shingles
    - Window Materials
    - Flooring Materials
      - Bamboo Flooring
      - Cork Flooring
      - Forest Steward Certified Wood
      - Linoleum Flooring
      - Reclaimed Lumber Flooring
      - Carpet
        Recycled Content Carpet
        
        Wool Carpet
    - Home Wiring
      - Electrical Wiring
      - Telephone Wiring
      - Intercom Wiring
      - Ham Radio Wiring
    - Plumbing & Throughput
    - - Paint & Coatings
      - Low & No VOC Paints and Finishes
        
        Low & No VOC Paints and Finishes
    - Adhesives
      - Bioadhesives
  - Heating
    - District Heating
    - Fan Heater
    - Furnace Heating
      - Electric Heating
      - Gas Heating
      - Forced-air Heating
      - Gravity-fed Heating
    - Geothermal Heating
    - Boiler
      - Radiator Heating
    - Salamander Heater
    - Heat Exchanger
    - Heat Pump
    - Storage Heater
    - Building Insulation
      - Thermal Insulation
        Cellulose Insulation
        
        Cotton Insulation
        
        Formaldehyde-free Fiberglass
      - Sound Insulation
    - Thermal Mass Heating
    - Fuel Burners
      - Fireplace
      - Stove Types
        Wood Stove
        
        Coal Stove
        
        Waste Fuel
        
        Pellet Stove
        
        Peat Fuel
    - Hydronics
      - Underfloor Heating
    - Baseboard Heating
      - Electric Baseboard Heating
    - Solar Heating
      - Passive Solar Heating
  - Cooling
    - Air Conditioning
      - Whole House Forced Air
      - Single Unit Air Conditioner
    - Ceiling Fan
    - Evaporative Cooler
    - Thermal Mass Cooling
    - Whole House Fan
  - Cooking
    - Cooking Stove
      - Electric Stove
      - Gas Stove
      - Wood Stove
      - Broiler Oven
      - Grill Cooking
  - Sewage
    - Greywater System
    - Black Water System
  - Household Garbage
  - Windows
    - Window Types
      - Composite Windows
      - Fiberglass Windows
      - Vinyl Windows
      - Wood Windows
      - Low-emissivity Windows
    - Window Coverings
      - Window Shutters
      - Storm Door
  - Air Flow
  - Lighting
    - Natural Lighting
      - Day Lighting
      - Skylights
    - Artificial Lighting
      - Compact Fluorescent Lighting
  - Water
    - Water Storage
      - Cistern
    - Water Quality
    - Water Heating
      - Hot Water Tank
        Gas Water Heating
        
        Electric Water Heating
        
        Solar Water Heating
        
        Thermal Water Heating
      - Heat Pump Water Heater
      - On-Demand (Tankless) Water Heating
    - Plumbing
  - Rooms
    - Room Arrangement
    - Kitchen
      - Kitchen Cabinetry
        Cabinet Materials
        
        Low VOC Cabinets
      - Kitchen Major Appliances
        Dishwasher
        
        Refrigerator/Freezer
        
        Oven
        
        Stovetop
        
        Microwave Oven