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Welcome to Appropedia

We develop knowledge to build rich, sustainable lives (read our vision and mission).

Explore solutions for sustainability, appropriate technology, poverty reduction, and permaculture. You are encouraged to add to and edit Appropedia with your original research on these subjects. To learn more about appropriate technology, we invite you to check Portal:Appropriate technology.

Browse our categories or all 8,834 articles. Contributors have made 419,594 edits and uploaded 34,931 files.

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To catch the rain cover.png Rainwater catchment around the world.
Get a paperback on Amazon or free digitally at http://www.tocatchtherain.org.


Finished Vermicomposting System
CCAT's Vermicomposting Bin. I am very excited to be posting directions for building your very own home vermiculture bin! The methods employed will produce a bin appropriate for a household of 3-5 people and should last a number of years if constructed properly. There of course are many types of bin designs out there and I wanted the creative opportunity to design my own. In looking for ideas in a gardening magazine, I noticed a pentagon shaped planter for gardens whose shape I really liked. A pentagon is also practical because compost is less likely to get stuck in the corners as often happens in normal square shaped boxes, preventing the organic materials from cycling properly. I decided to make a two-part stackable bin so that using the finished compost would be easier. Once the compost is processed it is easy to take off the top section, dump the compost in the garden, and put it on top to be filled again. The partitioned design is also improves aeration to speed up the composting process. Aeration is also provided by the holes drilled in the sides of the bin. The bottom of each bin section is finished with wire mesh to keep the compost in place. The holes of the wire mesh are large enough to allow worms and microbes to enter the system and speed up decomposition. The top is simple plywood cut to size with a brass handle and L-brackets to keep the lid in place. The bin was lastly finished with natural organic linseed oil as a sealer for endurance in the elements and general durability. I hope you enjoy! Read more...
A scary earthen oven that uses three layers to maximize efficiency, and all three types of heat to maximize the flavor.
A scary earthen oven that uses three layers to maximize efficiency, and all three types of heat to maximize the flavor. Read more or check our book


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Community action news

India2.jpg

Jul 2 India news: "The extraordinary agency of ordinary villagers": India's rural areas show enduring self-reliance, under the toughest conditions [1]

Jun 28 Towards sustainable economies UK: Just 6% of UK public 'want a return to pre-pandemic economy' [2]

Jun 21 UK Climate news: Britain still failing on climate crisis, warn advisers [3]

Jun 21 France: La convention citoyenne pour le climat souhaite un référendum sur la Constitution et le crime d’« écocide » [4]

Jun 17 Biodiversity news: Pandemics result from destruction of nature, say UN and WHO [5]

Read More...



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Thich Nhat Hanh
We have to walk in a way that we only print peace and serenity on the Earth. Walk as if you are kissing the Earth with your feet.

Thich Nhat HanhW


The Sun photographed by the Atmospheric Imaging Assembly (AIA 304) of NASA's Solar Dynamics Observatory (SDO).
Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar radiation, along with secondary solar-powered resources such as wind and wave power, hydroelectricity and biomass, account for most of the available renewable energy on earth. Only a minuscule fraction of the available solar energy is used.

Solar powered electrical generation relies on heat engines and photovoltaics. Solar energy's uses are limited only by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, solar hot water, solar cooking, and high temperature process heat for industrial purposes.To harvest the solar energy, the most common way is to use solar panels.

Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.


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