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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 354,685 edits and uploaded 28,165 files.
Browse our categories or all 7,594 articles.

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After being hung up overnight in a breezy location, shirts worn once (even in the tropics!) smell quite fresh enough to wear again.
Washing and drying clothes. Washing and drying clothing are common activities that can use a lot of energy - if we aren't careful. But there are a lot of things, most importantly washing in cold water and line drying, which are not only greener, but will make your clothes last longer (as long as you don't leave them outside too long, to fade).

Why does it matter? - Energy usage: We need to use less energy with efficient washers and cold water (unless there is abundant solar hot water), and use renewable energy where possible.

Water usage: The more water we use, the harder it is to process the waste water, and the more strain we place on the water supply.

Water pollution: Minimize the use of detergent. Consider these words about the chemicals you use. Once people appreciate that they make other things dirty when they make their clothes clean, they think differently about what they're doing.

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Sun Frost energy efficient shower

Conventional showers minimize thermal comfort, maximize energy use and water consumption, and exacerbating moisture problems... A solution?

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Community action news

Boat Houses at Brighton Beach.jpg
Apr 28 Victoria backs renewable energy community hubs with $900,000 investment [1]

Apr 26 Berliners finally dump the car for love affair with the bicycle [2]

Apr 24 US news: ‘Tomorrow’ reaches the US! [3]

Apr 23 Minnesota: Craftsman donates his tools - and himself [4]

Apr 21 San Diego: More minority communities are saving money and energy with renewable solar energy [5]

Read More...


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Bill Mollison talking about the future.
Though the problems of the world are increasingly complex, the solutions remain embarrassingly simple.

Bill MollisonW
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Hot topics / In the news

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Blog

Man working in a rice field.
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells in an effort to produce energy, maintain life, and/or stimulate growth. Historically, people secured food through two methods: hunting and gathering, and agriculture.

Agriculture is the cultivation of animals, plants, fungi and other life forms for food, fiber, and other products used to sustain life. Agriculture was the key implement in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the development of civilization. In the developed world, industrial agriculture based on large-scale monoculture has become the dominant system of modern farming, although there is growing support for sustainable agriculture (e.g. permaculture or organic agriculture).

Sustainable agriculture is the practice of farming using principles of ecology, the study of relationships between organisms and their environment. It has been defined as "an integrated system of plant and animal production practices having a site-specific application that will last over the long term: satisfy human food and fiber needs; make the most efficient use of non-renewable resources and on-farm resources and integrate, where appropriate, natural biological cycles and controls; sustain the economic viability of farm operations; and enhance the quality of life for farmers and society as a whole.”

Related portal: Permaculture
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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.

CCAT Clay-straw slip wall

Clay-straw slip wall of CCAT's Greenshed  
CCAT clothes drying

Efficient clothes drying system for CCAT  
CCAT Cold Box

An energy efficient solution to a refrigerator  
CCAT Compost System

CCAT's comprehensive composting system  
CCAT greenhouse natural wall

An aesthetically pleasing natural earthen wall built by clay and straw slip methods  
CCAT greenshed cob wall

Cob wall of CCAT's Greenshed  
CCAT greenshed north wall

Cordwood and mortar wall of CCAT's Greenshed  
CCAT greenshed west wall

Clay-straw slip wall of CCAT's Greenshed  
CCAT greywater marsh (2008)

CCAT's Greywater Marsh 2008  
CCAT greywater marsh (current)

CCAT Greywater Marsh Continued  
CCAT interpretive wind turbine display

Demonstration wind turbine  
CCAT's living roof

Replacing CCAT's living roof  
CCAT MEOW 2012

Refurbishment of CCAT's Mobile Energy Operation Wagon  
CCAT natural concrete stain

Natural concrete stain  
CCAT natural paint project

Interior paints from natural ingredients  
CCAT natural wall construction

Earthen informational kiosk for CCAT  
CCAT pedal powered grain mill

Pedal powered grain mill for CCAT  
CCAT pedal powered TV

Updated version of CCAT pedal powered bicycle  
CCAT rainwater catchment system

CCAT's current rainwater catchment system  
CCAT Raised Garden Beds

Controlled beds of soil above toxic ground  
CCAT remediation zone

A stable slope for planting and attracting beneficial insects  
CCAT Retaining Wall

Retaining wall for slope erosion at CCAT  
CCAT rocket stove

CCAT's improved fuel rocket stove  
CCAT small rainwater catchment

Rainwater catchment for CCAT's cob bench roof  
CCAT's Vermicomposting Bin

CCAT's vermicomposting bin  
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