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Sharing knowledge to build rich, sustainable lives.

Appropedia is for collaborative solutions
in sustainability, appropriate technology, poverty reduction, and permaculture.

You are welcome to add to and edit Appropedia -
your site to find, co-create and improve the solutions we need. Our vision and mission.

Contributors have made 341,171 edits and uploaded 26,990 files.
Browse our categories or all 7,317 articles.

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Announcements — more

Aprologo-old.png As we approach our ten-year anniversary, we are looking at how best to support Appropedia in the next ten years. Please share your thoughts with us on the idea of appointing an Executive Director.

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Monolithic dome office
Monolithic domes are constructed following a method that requires a tough, inflatable Airform, steel-reinforced concrete and a polyurethane foam insulation. Each of these ingredients is used in a technologically specific way. This technology was developed by the Monolithic Dome Institute (MDI). The domes can be designed to fit any architectural need: homes, cabins, churches, schools, gymnasiums, arenas and stadiums, bulk storages, landlord dwellings and various other privately or publicly owned facilities. The dome, when finished, is earthquake, tornado and hurricane resistant (FEMA rates them as "near-absolute protection" from F5 tornadoes and Category 5 Hurricanes).

MDI has also developed the technology to build so-called "EcoShells". These are simple structures to provide for the basic needs of a family. They are designed specifically to answer the needs of shelterless people worldwide. They are strong structures that can withstand natural disasters, fire, termites and rot. In underdeveloped areas with hot climates, EcoShells make affordable, low maintenance, sturdy housing. In industrialized nations, EcoShells make superior workshops, garages, storage sheds, etc.

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Solar Charged Lawnmower

Converting a very used gas power lawnmower into a solar charged, low emission, almost silent, lawn cutting machine.

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Community action news

Oct 25 Switzerland: Swiss Grannies launch legal challenge to demand stronger climate action [1]

Oct 19 Los Angeles: Born of Triumph and Tragedy, Social Justice Org Fosters Health Equity and Well-being of Communities of Color [2]

Oct 19 Cycologic: The power of women for the power of bicycles in Uganda [3]

Oct 18 Climate news: Historic lawsuit against Arctic oil [4]

Oct 17 Félicitations Madame Mayor: participatory budgeting in Paris hits new highs [5]


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Fukuoka throwing a seedball at a 2002 workshop at Navdanya
Observe Nature thoroughly rather than labor thoughtlessly.

Masanobu FukuokaW, The One-Straw Revolution
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Hot topics / In the news

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Aleiha's parabolic solar cooker
In physics, energy is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems. Since work is defined as a force acting through a distance (a length of space), energy is always equivalent to the ability to exert pulls or pushes against the basic forces of nature, along a path of a certain length.

Sustainable energy is the provision of energy that meets the needs of the present without compromising the ability of future generations to meet their needs. Sustainable energy sources are most often regarded as including all renewable energy sources, such as hydroelectricity, solar energy and power, wind power, wave power, geothermal energy and power, biomass fuel and energy, and tidal power. It usually also includes technologies that improve energy efficiency.

While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas, where energy is often crucial in human development. As of 2011, small solar photovoltaic (PV) systems provide electricity to a few million households, and micro-hydro configured into mini-grids serves many more. Over 44 million households use biogas made in household-scale digesters for lighting and/or cooking, and more than 166 million households rely on a new generation of more-efficient biomass cookstoves.

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Engr305 Appropriate Technology Projects: Below are selected service learning projects from Engr305 Appropriate Technology, which is a course on appropriate technology at Humboldt State University taught by instructor Lonny Grafman.

Treadmill-a-volt treadmill powered charging

Treadmill power for the Humboldt Bay Center for Sustainable Living  
Troubleshooting the AEF photovoltaic system

Troubleshooting, repairing, testing and maintaining a preexisting off-grid photovoltaic system  
Tule Fog Farm Grassfed Shed

An indoor space for pigs and goats that also restores a previous brownfield while improving the overall natural landscape  
Umbrella solar cooker

A multi-use solar cooker  
Wild Chick Farm

A commercial pastured chicken operation in Arcata, California  
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