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{{Short description|Concept in the philosophy and politics of technology}}
[[File:Musoke Deo MDK-MUSO. A SIMPLE PEDAL-WATER PUMP USED IN URBAN & RURAL POOR COMMUNITIES.jpg|thumb|Pedal-powered water pump in Uganda]]
'''Appropriate technology''' is a movement (and its manifestations) encompassing [[technology|technological]] choice and application that is small-scale, affordable by its users, [[labor-intensive]], [[efficient energy use|energy-efficient]], [[environmentally sustainable]], and [[localism (politics)|locally autonomous]].<ref name=BrownU>{{cite book|title=Appropriate Technology: Tools, Choices, and Implications|year=1999|publisher=Academic Press|___location=New York|isbn=0-12-335190-1|pages=3, 270|author=Hazeltine, B.|author2=Bull, C.}}</ref><ref name=SianiparEJSD>{{cite journal|last1=Sianipar|first1=C.P.M.|last2=Dowaki|first2=K.|last3=Yudoko|first3=G.|last4=Adhiutama|first4=A.|year=2013|title=Seven pillars of survivability: Appropriate Technology with a human face|journal=European Journal of Sustainable Development|volume=2|issue=4|pages=1–18|url=https://www.researchgate.net/publication/236658117|doi=10.14207/ejsd.2013.v2n4p1|s2cid= 43175160|doi-access=free|bibcode=2013EJSD....2....1S }}</ref> It was originally articulated as '''intermediate technology''' by the economist [[E. F. Schumacher|Ernst Friedrich "Fritz" Schumacher]] in his work ''[[Small Is Beautiful]].'' Both Schumacher and many modern-day proponents of appropriate technology also emphasize the technology as [[People-centered development|people-centered]].<ref name=Akubue>{{cite journal|last=Akubue|first=Anthony|title=Appropriate Technology for Socioeconomic Development in Third World Countries|journal=The Journal of Technology Studies|date=Winter–Spring 2000|volume=26|issue=1|pages=33–43|doi=10.21061/jots.v26i1.a.6|doi-access=free}}</ref><ref name=E4C>{{cite news| author=<!--Staff writer(s); no by-line.-->|title= Communities move to the center of the design process in a newly proposed methodology|url=https://www.engineeringforchange.org/news/communities-move-to-the-center-of-the-design-process-in-a-newly-proposed-methodology/|newspaper=Engineering for Change|___location= |date= September 21, 2013|access-date=March 9, 2021}}</ref>
Appropriate technology has been used to address issues in a wide range of fields. Well-known examples of appropriate technology applications include: bike- and hand-powered water pumps (and other [[self-powered equipment]]), the [[bicycle]], the [[universal nut sheller]], self-contained [[solar lamp]]s and [[Solar street light|streetlights]], and [[passive solar building design]]s. Today appropriate technology is often developed using [[open source]] principles, which have led to ''[[open-source appropriate technology]]'' (OSAT) and thus many of the plans of the technology can be freely found on the [[Internet]].<ref>{{cite journal |last1=Buitenhuis |first1=J |last2=Zelenika |first2=Ivana |last3=Pearce |first3=Joshua M. |title=Open Design-Based Strategies to Enhance Appropriate Technology Development |journal=Open: NCIIA 14th Annual Conference |date=March 2010 |id={{ProQuest|845798606}} |url=https://hal.archives-ouvertes.fr/hal-02120500/ }}</ref><ref>{{cite journal | last1 = Pearce | first1 = Joshua M. | year = 2012 | title = The Case for Open Source Appropriate Technology | journal = Environment, Development and Sustainability | volume = 14 | issue = 3| pages = 425–431 | doi = 10.1007/s10668-012-9337-9 | doi-access = free | bibcode = 2012EDSus..14..425P }}</ref> OSAT has been proposed as a new model of enabling [[innovation]] for [[sustainable development]].<ref>{{cite journal |last1=Pearce |first1=Joshua |last2=Albritton |first2=Scott |last3=Grant |first3=Gabriel |last4=Steed |first4=Garrett |last5=Zelenika |first5=Ivana |title=A new model for enabling innovation in appropriate technology for sustainable development |journal=Sustainability: Science, Practice and Policy |date=October 2012 |volume=8 |issue=2 |pages=42–53 |doi=10.1080/15487733.2012.11908095 |s2cid=17627587 |doi-access=free |bibcode=2012SSPP....8...42P }}</ref><ref>{{cite journal |last1=Zelenika |first1=I. |last2=Pearce |first2=J. M. |title=Innovation through collaboration: scaling up solutions for sustainable development |journal=Environment, Development and Sustainability |date=December 2014 |volume=16 |issue=6 |pages=1299–1316 |doi=10.1007/s10668-014-9528-7 |bibcode=2014EDSus..16.1299Z |s2cid=154827180 |url=https://hal.archives-ouvertes.fr/hal-02119686/file/Innovation_Through_Collaboration_Scaling.pdf }}</ref>
Appropriate technology is most commonly discussed in its relationship to [[economic development]] and as an alternative to [[technology transfer]] of more [[Capital (economics)|capital]]-intensive technology from [[industrialized nations]] to [[developing countries]].<ref name=Akubue/><ref name=SianiparJSSM>
{{cite journal|last1=Sianipar|first1=C.P.M.|last2=Yudoko|first2=G.|last3=Dowaki|first3=K.|last4=Adhiutama|first4=A.|year=2014|title=Design and technological appropriateness: The quest for community survivability|journal=Journal of Sustainability Science and Management|volume=9|issue=1|pages=1–17|url=https://www.researchgate.net/publication/266144345}}</ref><ref name=Todaro>{{cite book|title=Economic Development|url=https://archive.org/details/economicdevelopm8thtoda|url-access=registration|year=2003|publisher=Addison Wesley|___location=Boston|isbn=0-273-65549-3|pages=[https://archive.org/details/economicdevelopm8thtoda/page/252 252–254]|author=Todaro, M.|author2=Smith, S.}}</ref> However, appropriate technology movements can be found in both developing and developed countries. In developed countries, the appropriate technology movement grew out of the [[energy crisis of the 1970s]] and focuses mainly on environmental and [[sustainability]] issues.<ref name="NCAT">{{cite web|url=http://www.ncat.org/history|title=The History of NCAT|last=The National Center for Appropriate Technology|access-date=20 September 2017|archive-url=https://web.archive.org/web/20180908202318/http://www.ncat.org/history/|archive-date=8 September 2018}}</ref> Today the idea is multifaceted; in some contexts, appropriate technology can be described as the simplest level of technology that can achieve the intended purpose, whereas in others, it can refer to engineering that takes adequate consideration of social and environmental ramifications. The facets are connected through [[robustness]] and [[sustainable living]].
==
{{synthesis|section|date=August 2024}}
===Predecessors===
Indian ideological leader [[Gandhi|Mahatma Gandhi]] is often cited as the "father" of the appropriate technology movement. Though the concept had not been given a name, Gandhi advocated for small, local and predominantly village-based technology to help India's villages become self-reliant. He disagreed with the idea of technology that benefited a minority of people at the expense of the majority or that put people out of work to increase profit.<ref name=Akubue /> In 1925 Gandhi founded the All-India Spinners Association and in 1935 he retired from politics to form the All-India Village Industries Association. Both organizations focused on village-based technology similar to the future appropriate technology movement.<ref name=mkgandhi>{{cite web |title=Back in India |website=MK Gandhi |url=http://www.mkgandhi.org/chrono/under3.htm |archive-url=https://web.archive.org/web/20110507040402/http://www.mkgandhi.org/chrono/under3.htm |archive-date=2011-05-07 |access-date=23 April 2011}}</ref>
China also implemented policies similar to appropriate technology during the reign of [[Mao Zedong]] and the following [[Cultural Revolution]]. During the Cultural Revolution, development policies based on the idea of "walking on two legs" advocated the development of both large-scale factories and small-scale village industries.<ref name=Akubue />
Despite these early examples, [[E. F. Schumacher|Dr. Ernst Friedrich "Fritz" Schumacher]] is credited as the founder of the appropriate technology movement. A well-known economist, Schumacher worked for the British National Coal Board for more than 20 years, where he blamed the size of the industry's operations for its uncaring response to the harm [[Black lung disease|black-lung disease]] inflicted on the miners.<ref name=Akubue /> However it was his work with developing countries, such as [[India]] and [[Burma]],
Schumacher first articulated the idea of "intermediate technology," now known as appropriate technology, in a 1962 report to the Indian Planning Commission in which he described India as long in labor and short in capital, calling for an "intermediate industrial technology"<ref name=mcrobie>{{cite book|last=McRobie|first=George|title=Small Is Possible|year=1981|publisher=Harper & Row|___location=New York|isbn=0-06-013041-5|
Initially, Schumacher's ideas were rejected by both the Indian government and leading development economists. Spurred to action over concern the idea of intermediate technology would languish, Schumacher, George McRobie, [[Mansur Hoda]]<ref name="Guardian">[
[[Image:RachelAndMachine.jpg|thumb|The [[
Between 1966 and 1975 the number of new appropriate technology organizations founded each year was three times greater than the previous nine years. There was also an increase in organizations focusing on applying appropriate technology to the problems of industrialized nations, particularly issues related to energy and the environment.<ref name=OECD>{{cite book|title=The World of Appropriate Technology|year=1983|publisher=Development Center of the OECD|___location=Paris|author=Jequier, N.|
Appropriate technology was also increasingly applied in developed countries. For example, the energy crisis of the mid-1970s led to the creation of the [[National Center for Appropriate Technology]] (NCAT) in 1977 with an initial appropriation of
In more recent years, the appropriate technology movement has continued to decline in prominence.
A more [[free market]]-centric view has also begun to dominate the field. For example, [[Paul Polak]], founder of [[International Development Enterprises]] (an organization that designs and manufactures products that follow the ideals of appropriate technology), declared appropriate technology dead in a 2010 blog post.<ref name=polak>{{cite web|last=Polak|first=Paul|title=THE DEATH OF APPROPRIATE TECHNOLOGY I
Polak argues the "[[design for the other 90 percent]]" movement has replaced appropriate technology. Growing out of the appropriate technology movement, designing for the other 90 percent advocates the creation of low-cost solutions for the 5.8 billion of the world's 6.8 billion population "who have little or no access to most of the products and services many of us take for granted."<ref name=cooperhewittabout>{{cite web|last=Cooper–Hewitt Museum|title=Design for the other 90%|url=http://other90.cooperhewitt.org/about/|
Many of the ideas integral to appropriate technology can now be found in the increasingly popular "[[sustainable development]]" movement, which among many tenets advocates technological choice that meets human needs while preserving the environment for future
Despite the decline, several appropriate technology organizations are still in existence, including the ITDG which became [[Practical Action]] after a name change in 2005.<ref name=practicalactionname>{{cite web|last=Practical Action|title=Practical Action is the new name for ITDG|url=http://practicalaction.org/history?id=practicalaction|access-date=24 April 2011}}</ref> Skat (Schweizerische Kontaktstelle für Angepasste Technology) adapted by becoming a private consultancy in 1998, though some Intermediate Technology activities are continued by Skat Foundation through the Rural Water Supply Network (RWSN). Another actor still very active is the charity CEAS (Centre Ecologique Albert Schweitzer). A pioneer in food transformation and solar heaters, it offers vocational training in West Africa and Madagascar. There is also currently a notable resurgence as viewed by the number of groups adopting [[open source appropriate technology]] (OSAT) because of the enabling technology of the Internet. These OSAT groups include: [[Akvo Foundation]], Appropedia, [[The Appropriate Technology Collaborative]], [[Catalytic Communities]], [[Centre for Alternative Technology]], Center For Development Alternatives, [[Engineers Without Borders]], [[Open Source Ecology]], [[Practical Action]], and [[Village Earth]]. Most recently [[ASME]], Engineers Without Borders (USA) and the [[IEEE]] have joined to produce [[Engineering for Change]], which facilitates the development of affordable, locally appropriate and sustainable solutions to the most pressing humanitarian challenges.{{citation needed|date=January 2024}}
==Terminology==
Appropriate technology frequently serves as an umbrella term for a variety names for this type of technology. Frequently these terms are used interchangeably; however, the use of one term over another can indicate the specific focus, [[bias]] or agenda of the technological choice in question. Though the original name for the concept now known as appropriate technology, "intermediate technology" is now often considered a subset of appropriate technology that focuses on technology that is more productive than "inefficient" traditional technologies, but less costly than the technology of industrialized societies.<ref name=evans>{{cite book|title=Appropriate Technology in Third World Development|year=1984|publisher=Greenwood Press|___location=London|isbn=0-313-24150-3|author=Evans, D.D.|author-link=Appropriate Technology and Its Role|editor=Ghosh, P. K.|page=[https://archive.org/details/appropriatetechn0000unse_s1f1/page/40 40]|url=https://archive.org/details/appropriatetechn0000unse_s1f1/page/40}}</ref> Other types of technology under the appropriate technology umbrella include:
{{div col|colwidth=30em}}
* Capital-saving technology
* Mid-tech
* Labor-intensive technology
* Alternate technology
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* Progressive technology
* Indigenous technology
*
* Light-engineering technology
* Adaptive technology
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{{div col end}}
A variety of competing definitions exist in academic literature and organization and government policy papers for each of these terms.<ref name="OECD"/><ref name=evans /><ref name=jackson>{{cite book|title=Appropriate Technology in Third World Development|year=1984|publisher=Greenwood Press|___location=London|isbn=0-313-24150-3|author=Jackson, S.|
It is also possible to distinguish between ''hard'' and ''soft'' technologies. According to Dr. [[Maurice Albertson]] and Audrey Faulkner, appropriate ''hard'' technology is
Albertson and Faulkner consider appropriate ''soft'' technology as technology that deals with
A closely related concept is ''social technology'', defined as "products, techniques and/or re-applicable methodologies developed in the interaction with the community and that must represent effective solution in terms of social transformation".<ref>{{cite book | last1=Smith | first1=Adrian | last2=Fressoli | first2=Mariano | last3=Abrol | first3=Dinesh | last4=Arond | first4=Elisa | last5=Ely | first5=Adrian | title=Grassroots Innovation Movements | publisher=Routledge | date=2016-08-25 | isbn=978-1-317-45119-8 | doi=10.4324/9781315697888 | page=| url=https://library.oapen.org/bitstream/20.500.12657/52757/1/9781317451198.pdf }}</ref> Further, Kostakis et al.<ref>{{Cite journal|last1=Kostakis|first1=Vasilis|last2=Pazaitis|first2=Alex|last3=Liarokapis|first3=Minas|date=2023-06-20|title=Beyond high-tech versus low-tech: A tentative framework for sustainable urban data governance|journal=BigData&Society|volume=10 |doi=10.1177/20539517231180583 |language=en|issn=2053-9517|doi-access=free}}</ref> propose a mid-tech approach to distinguish between low-tech and hi-tech polarities. Inspired by E.F. Schumacher, they argue that mid-tech could be understood as an inclusive middle that may go beyond the two polarities, combining the efficiency and versatility of digital/automated technology with low-tech's potential for autonomy and resilience.
==Practitioners==
Some of the well known practitioners of the appropriate technology sector include:
[[B.V. Doshi]],<ref>see http://www.indiaenvironmentportal.org.in/node/5799 and http://www.auroville.org/thecity/architecture/two_at_once.htm {{Webarchive|url=https://web.archive.org/web/20081212193854/http://www.auroville.org/thecity/architecture/two_at_once.htm |date=2008-12-12 }} BV Doshi as AT founder</ref> [[Buckminster Fuller]], [[William Moyer]] (1933–2002), [[Amory Lovins]], [[Sanoussi Diakité]], [[Albert Bates]], [[Victor Papanek]], [[Giorgio Ceragioli]] (1930–2008), [[Frithjof Bergmann]], [[Arne Næss]], (1912–2009), [[Mansur Hoda]],<ref name="Guardian"/> and [[Laurie Baker]].
==Development==
Schumacher's initial concept of intermediate technology was created as a critique of the currently prevailing development strategies which focused on maximizing aggregate economic growth through increases to overall measurements of a country's economy, such as [[gross domestic product]] (GDP).<ref name=jackson /> Developed countries became aware of the situation of developing countries during and in the years following [[World War II]]. Based on the continuing rise in income levels in Western countries since the Industrial Revolution, developed countries embarked on a campaign of massive transfers of capital and technology to developing countries in order to force a rapid industrialization intended to result in an economic "take-off" in the developing countries.<ref name=jackson /><ref name=baron>{{cite book|last=Baron|first=C.|title=Appropriate technology in Third World Development|year=1984|publisher=Greenwood Press|___location=Westport, Connecticut|isbn=0-313-24150-3|page=[https://archive.org/details/appropriatetechn0000unse_s1f1/page/117 117]|editor=Ghosh, P.K.|url=https://archive.org/details/appropriatetechn0000unse_s1f1/page/117}}</ref>
However, by the late 1960s it was becoming clear this development method had not worked as expected and a growing number of development experts and national policy makers were recognizing it as a potential cause of increasing poverty and income inequality in developing countries.<ref name=jequier>{{cite book|last=Jequier|first=Nicolas|title=Appropriate Technology: Problems and Promises|year=1976|publisher=[[OECD]] |___location=Paris|page=16}}</ref> In many countries, this influx of technology had increased the overall economic capacity of the country. However, it had created a dual or two-tiered economy with pronounced division between the classes. The foreign technology imports were only benefiting a small minority of urban elites. This was also increasing urbanization with the rural poor moving to urban cities in hope of more financial opportunities. The increased strain on urban infrastructures and public services led to "increasing squalor, severe impacts on public health and distortions in the social structure."<ref name=evans />
Appropriate technology was meant to address four problems: extreme poverty, starvation, unemployment and urban migration. Schumacher saw the main purpose for economic development programs was the eradication of extreme poverty and he saw a clear connection between mass unemployment and extreme poverty. Schumacher sought to shift development efforts from a bias towards urban areas and on increasing the output per laborer to focusing on rural areas (where a majority of the population still lived) and on increasing employment.<ref name=willoughby>{{cite book|last=Willoughby|first=K.W.|title=Technology Choice: A Critique of the Appropriate Technology Movement|year=1990|publisher=Intermediate Technology Publications|___location=London|isbn=0-8133-7806-0|page=72}}</ref>
==In developed countries==
The term ''appropriate technology'' is also used in developed nations to describe the use of technology and engineering that result in less negative impacts on the environment and society, ''i.e.'', technology should be both environmentally sustainable and socially appropriate.<ref>Huesemann, M.H., and J.A. Huesemann (2011). [http://www.newtechnologyandsociety.org ''Technofix: Why Technology Won't Save Us or the Environment''], Chapter 13, "The Design of Environmentally Sustainable and Appropriate Technologies", New Society Publishers, Gabriola Island, British Columbia, Canada, 464 pp.</ref><ref name=nytimes08>Schneider, Keith. [https://www.nytimes.com/2008/03/26/business/businessspecial2/26degree.html?scp=2&sq=%22appropriate+technology%22&st=nyt "Majoring in Renewable Energy."] 26 March 2008.</ref> E. F. Schumacher asserts that such technology, described in the book ''[[Small Is Beautiful]],''<ref>E. F. Schumacher; ''Small Is Beautiful: Economics As If People Mattered: 25 Years Later...With Commentaries''. [[Hartley & Marks Publishers]] {{ISBN|0-88179-169-5}}</ref> tends to promote values such as [[health]], [[beauty]] and permanence, in that order.
Often the type of appropriate technology that is used in developed countries is "appropriate and sustainable technology" (AST),<ref>{{cite web |url= https://mcedc.colorado.edu/research |title=Research | Mortenson Center | University of Colorado Boulder |work=mcedc.colorado.edu |year=2012 |access-date=December 2, 2012}}</ref> appropriate technology that, besides being functional and relatively cheap (though often more expensive than true AT), is durable and employs [[renewable resource]]s. AT does not include this (see [[Sustainable design]]).
==Applications==
{{excerpt|List of appropriate technology applications}}
==Determining a sustainable approach==
Features such as low cost, low usage of [[fossil fuels]] and use of locally available resources can give some advantages in terms of [[sustainability]].<ref name=SianiparEJSD /> For that reason, these technologies are sometimes used and promoted by advocates of sustainability and [[alternative technology]].
Besides using natural, locally available resources<ref name=SianiparSUSTAIN-J>{{cite journal |last1=Sianipar |first1=Corinthias |last2=Yudoko |first2=Gatot |last3=Dowaki |first3=Kiyoshi |last4=Adhiutama |first4=Akbar |title=Design Methodology for Appropriate Technology: Engineering as if People Mattered |journal=Sustainability |date=12 August 2013 |volume=5 |issue=8 |pages=3382–3425 |doi=10.3390/su5083382 |doi-access=free |bibcode=2013Sust....5.3382S }}</ref> (''e.g.'', wood or adobe), waste materials imported from cities using conventional (and inefficient) waste management may be gathered and re-used to build a sustainable living environment. Use of these cities' waste material allows the gathering of a huge amount of building material at a low cost. When obtained, the materials may be recycled over and over in the own city/community, using the [[cradle to cradle design]] method. Locations where waste can be found include [[landfill]]s, [[Wreck yard|junkyards]], on water surfaces and anywhere around towns or near highways. Organic waste that can be reused to fertilise plants can be found in sewages. Also, town districts and other places (''e.g.'', [[Cemetery|cemeteries]]) that are subject of undergoing renovation or removal can be used for gathering materials as stone, concrete, or potassium.
==Related social movements==
{{div col|colwidth=30em}}
* [[Community-based economics]]
* [[Cosmopolitan localism]]
* [[Campus Center for Appropriate Technology (CCAT)]]
* [[National Center for Appropriate Technology]]
* [[Alternative propulsion]]
* [[Alternative technology]]
* [[DIY culture]]
* [[Eco-village]]
* [[
* [[
* [[
* [[Myth of Progress]]
* [[Open Source Appropriate Technology]]
* [[Permaculture]]
* [[Practical Action]] (charity formerly known as Intermediate Technology)
* ''[[Principles of Intelligent Urbanism]]''
* [[Social entrepreneurship]]
* [[Sustainable development]]
* ''[[Tools for Conviviality]]''
* [[Green syndicalism]]
* [[Lifehacking]]
* ''[[Small Is Beautiful]]''
* [[The Appropriate Technology Collaborative]]
{{div col end}}
== See also ==
{{Portal|Ecology|Energy|Renewable Energy}}
{{div col|colwidth=30em}}
* {{section link|Amish way of life#Use of modern technology}}
* [[Bush Pump]]
* [[Cradle to Cradle Design]]
* [[Critique of technology]]
* [[Deindustrialization]]
* [[List of environment topics]]
* [[Family planning]]
* [[No innovation without representation]]
* [[Old Order Mennonite]]
* [[Productivity improving technologies (historical)]]
* [[Schumacher Center for New Economics|Schumacher Center for a New Economics]]
* [[Russian Mennonite]]
* [[Social innovation]]
* [[Source reduction]]
* [[Synthetic biology]]
* [[Technology and society]]
* [[Zero emission]]
* [[Whole Earth Catalog]]
{{
==References==
{{Reflist|
==Further reading==
*Huesemann, Michael H., and Joyce A. Huesemann (2011). [http://www.newtechnologyandsociety.org ''Technofix: Why Technology Won't Save Us or the Environment''], Chapter 13, "The Design of Environmentally Sustainable and Appropriate Technologies", [[New Society Publishers]], Gabriola Island, British Columbia, Canada, {{ISBN|0-86571-704-4}}, 464 pp.
* [https://ssrn.com/abstract=1431594 Basic Needs Approach, Appropriate Technology, and Institutionalism] by Dr. Mohammad Omar Farooq.
* [https://berkeley.academia.edu/OzzieZehner/Papers/867475/Unintended_Consequences_of_Green_Technologies Unintended Consequences of Green Technologies].
* Edward Tenner, ''[[Why Things Bite Back]],'' Vantage Books, 1997.
* Zehner, Ozzie. [http://greenillusions.org ''Green Illusions''], [[University of Nebraska Press]], 2012.
==External links==
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{{Wikiversity|Topic:Self-sufficiency}}
{{Wikiversity|Environmental community building}}
{{Wikiversity|
* [[appropedia:|Appropedia – The Sustainability Wiki]]
* [http://www.akvopedia.org Akvopedia
* [http://www.
* {{usurped|1=[https://web.archive.org/web/20071214100227/http://www.apptechdesign.org/ The Appropriate Technology Collaborative]}} – An appropriate technology design and dissemination nonprofit.
* [http://www.wholeearth.com The Whole Earth Catalog: Access to Tools and Ideas] {{Webarchive|url=https://web.archive.org/web/20090106171959/http://wholeearth.com// |date=2009-01-06 }}
* [https://archive.today/20130219193509/http://www.ceas.ch/de/node/181 Guide des innovations pour lutter contre la pauvreté] (innovation guide to tackle poverty) / available in French, German and Portuguese, this guide features 100 innovations designed to improve the living conditions of the Poor.
{{Simple living}}
{{Sustainability}}
{{DEFAULTSORT:Appropriate Technology}}
[[Category:Appropriate technology| ]]
[[Category:Simple living]]
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