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Appropedia shares knowledge to build rich, sustainable lives (read our vision and mission).

Explore collaborative solutions in sustainability, appropriate technology, poverty reduction, and permaculture. You are encouraged to add to and edit Appropedia —to find, co-create and improve the solutions we need.


Browse our categories or all 8,523 articles. Contributors have made 404,764 edits and uploaded 33,339 files.

Climate changeCulture and communityDesignEnergyEnvironmentEnvironment rehabilitationFood and agricultureFundamental human_needsHealth and safetyInternational developmentKnowledgeTransportWater


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Emilio-thumb.png Emilio Velis has been appointed the new Executive Director of the Appropedia Foundation! Read more...


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A treadle pump being demonstrated in Malawi.
A treadle pump is a human-powered Pump designed to lift water from a depth of seven meters or less. A Treadle is a lever device pressed by the foot to drive a machine, in this case a pump. The treadle pump can do most of the work of a motorized pump, but costs considerably less (75%) to purchase. Because it needs no Fossil fuel (it is driven by the operator's body weight and Leg Muscl]s), it can also cost less (50%) to operate than a motorized pump. It can lift five to seven cubic meters of water per hour from wells and Boreholes up to seven meters deep and can also be used to draw water from Lakes and Rivers. Many treadle pumps are manufactured locally, but they can be challenging to produce consistently without highly skilled welders and production hardware.

Compared to bucket irrigation, the treadle pump can greatly increase the income that farmers generate from their land by increasing the number of growing seasons, by expanding the types of crops that can be cultivated, and improving on the quality of grown crops.

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Parabolic basket and tin can solar cooker

Creating a solar cooker out of local invasive species and waste materials in order to pasteurize water and be an alternative to the use of fossil fuels for cooking food.

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Community action news

Siena z01.JPG

Nov 13 Italy: Venice floods: Climate change behind highest tide in 50 years, says mayor [1]

Nov 11 Australia news: Is climate change to blame for Australia's bushfires? [2]

Nov 8 Australia news: Australia bushfires: 'Unprecedented' fires turn skies orange [3]

Nov 7 Ardern says New Zealand on 'right side of history' as MPs pass zero-carbon bill [4]

Nov 5 Climate news 2019: Climate change: ‘Clear and unequivocal’ emergency, say scientists [5]

Read More...


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Cathy Leslie, Executive Director of Engineers Without Borders-USA
In order to stay competitive, tomorrow's engineer will need to become more culturally savvy, as well as adept at implementing appropriate technologies. Capacity building is not about constructing a showcase engineering project. It's about coming up with practical, sustainable solutions that fit the environment, its people and the culture as well. (ASME)

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Hot topics / In the news


The Vitruvian Man is a world-renowned drawing created by Leonardo da Vinci circa 1487.
Those who have health have hope, and those who have hope have everything.
Arabian Proverb

An individuals health greatly influences their ability to support themselves, provide for their family, and contribute to the community. Because of this, access to care and the health of a community is central to any development effort.

Unfortunately, health care is poorly distributed around the world. Southern hemisphere countries are much more likely to suffer from lack of access to care. One aspect of this disparity is the health technology gap between developed and developing nations. While developed countries continue to invest in high technology equipment, developing countries often lack the most basic health care tools. Appropriate Medical Technologies (AMT's) can help communities, governments and development agencies create simple, low-cost, and culturally appropriate responses to health care problems.

The use of appropriate technologies is less common in healthcare than other fields such as construction or agriculture. However, there is significant crossover between the public health field and the water and sanitation fields, areas that are more familiar with appropriate technologies. Appropriate technology is often used to develop mobility and rehabilitation equipment as well as tests used to diagnose diseases.

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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.

Air Ship Air City rooftop greywater filtration

A rooftop greywater filtration system  
Aleiha's parabolic solar cooker

Parabolic Solar Cooker  
Amal's ethanol still

A valved reflux ethanol still  
Backyard Biodigester

A biodigester converting organic waste to a fuel source  
Bike Rodeo bicycle blender

A kid's bike blender for Rio Dell Community Resource Center  
Bike trailer

A bike trailer from a converted baby stroller  
Blue ox earthen oven

Blue Ox earthen oven  
Bottoms strawbale earthen plaster

Earthen plaster and natural paint recipes  
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Energy

Solar
Water
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New pages being developed:
  1. Six Rivers Charter High School pocket orchard
  2. Fruit crusher
  3. Improved Hammer
  4. Open Source Automated Scanning Monochromator
  5. Saving water in South East England
  6. Gravity Light Attachment
  7. Forceps/Tweezers
  8. Dental Chair
  9. 777 OSAT projects 2019
  10. Peoples assemblies

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