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|File:AEFfill.jpg| [[AEF greywater]]: Recreating a failing greywater marsh at the Arcata Educational Farm.
 
|File:Aleiha_dish.jpg| [[Aleiha's parabolic solar cooker]]: A very hot parabolic solar cooker.
 
|File:IMG_6743.JPG| [[Argentina photovoltaic]]: A small photovoltaic system for a [[natural building]]/permaculture institute in Central Argentina.
 
  
|File:Bpack_bike_trailer_-_demo_1.jpg| [[Backpack frame bike trailer]]: [[User:Big Russ|Big Russ]] towing one of the least-expensive bike trailer designs out there built from an old backpack-frame.
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|File:Bike_Plow_Daveplow2s.JPG| [[Bike snow plow]]: A retractable snow plow for a bike.
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|File:100 2546.JPG| [[Biodigester Effluent Fertilizer Quality Testing with IRRI]], in Mexico city
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<!---|File:SDC11427.JPG| [[Biodigester follow up and maintenance with IRRI]] in Puebla, Mexico.
 
|File:Finalcobbbench(6).jpg| [[Bloomfield Cobb Bench]]: A cobb bench at Bloomfiled Elementary School in Arcata, CA.
 
|File:BricelandFinal.jpg| [[Briceland PV]]: 960W photovoltaic installation in Briceland, CA.
 
  
|File:Fin2.jpg| [[CCAT's Vermicomposting Bin]]: Beautiful, pentagonal, Douglas Fir worm bin.
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|File:Set - 3 003.jpg| [[CCAT's Living Roof]]: A living roof for CCAT's Earthen Oven.
 
|File:100 2112.JPG| [[Ceiling insulation out of recycled Tetra pack at Pedregal]] in Oaxaca, Mexico.
 
|File:Cs-sfd-Bananas.jpg| [[Chris's ENGR305 Solar Food Dehydrator]]: A hybrid solar food dehydrator, that adheres to as many of the principles of modern food dehydration.
 
  
|File:Cutting adobe.jpg| [[DIF Adobe Senior Center]]: Building an Adobe senior center in Parras, Coahuila México.
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|File:100 2214.JPG| [[Ecological dry toilets at Pedregal]] in Oaxaca, Mexico
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|File:Erssons cistern.jpg| [[Ersson rainwater harvest and purification (original)]]: Rainwater catchment and purification system, at less than $1500
 
  
|File:Lalagrima.jpeg| [[Greywater Ecuador La lagrima purificadora]]: Greywater in an Ecuadorian seed saving center.
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|File:Hotel-perote-project-thumb.jpg| [[Hotel Perote Solar Pool Heating System]]: Solar hot water system for a hotel pool in Parras, Coahuila México.
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</div><div style="float:left; width:58%; margin-top:-20px;"> <!-- LEFT COLUMN: This width adds to the column below to equal 100%-->
|File:100 2499.JPG| [[Hydroponic Vertical Garden at Sembradores Urbanos]]in Mexico City
 
  
|File:Kivagreenhouse1 (45).jpg| [[Kiva’s straw bale greenhouse]]: Year round veggies in a homemade, just under the permitting limit, strawbale greenhouse.
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|File:100 2096.JPG| [[Micro filter dams at Pedregal]]  in Oaxaca, Mexico
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|File:100 2516.JPG| [[Mini urban greenhouse for seed germination at Sembradores Urbanos|Mini urban greenhouse for seed germination]] in Mexico City
 
  
|File:6 OccidentalGwTreatmentTanksBubbles.JPG| [[Occidental greywater]]: A five stage, activated sludge greywater system in drums.
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|File:SEARC OTF.jpg| [[Open Solar Outdoors Test Field]]<br>Open source photovoltaic<br>systems performance data
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{{:Welcome to Appropedia/box-footer‎‎}} <!-- BLOG -->
|File:openstreetmap icon.png| [[Openstreetmap]] <br>Copyright free <br>Map Making
 
|File:SJsolar03.jpg| [[Photovoltaic system at St. Jude's church]]: St. Jude's Church, Cupertino, CA
 
|File:100 2495.JPG| [[Polyculture Planting at Sembradores Urbanos]] in Mexico City
 
  
|File:Casa de Maria Luisa.jpg| [[Rainwater catchment at Isla Urbana]] in Mexico City.
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|File:RainCatchmentSloped_Terrain&Stormwater.jpg| [[Rainwater catchment at Pedregal]]  in Oaxaca, Mexico
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|File:100 2428.JPG| [[Rainwater quality testing with Isla Urbana]] in Mexico City
 
|File:100 2497.JPG| [[Raised Beds at Sembradores Urbanos]] in Mexico City
 
|File:100 2142.JPG| [[Reforestation at Pedregal]] in Oaxaca, Mexico
 
  
|File:Solarmowerleft.jpg| [[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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</div><div style="float:right; width:100%; margin-top:-15px; margin-bottom:15px"> <!-- FULL WIDTH -->
|File:Sunny-brae-yurt-covering4.jpg| [[Sunny Brae Yurt]]: Building yurt to brave Humboldt's winter.  Arcata, CA.
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|File:100 2070.JPG| [[Terraces and Ditches at Pedregal]] in Oaxaca, Mexico
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|File:Coop.jpg| [[Tire shingles]]: Roof shingles made from old racing slicks.
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|File:DSCF1875.JPG| [[UABJO Demonstration Wetland Wastewater Treatment, Reclamation, and Outreach]] in Oaxaca, Mexico.
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|File:SS06 Cutting With Mari.jpg| [[UTC Solar Distiller]]: Building a prototype solar distiller in Parras, Coahuila México.
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|File:100 2486.JPG| [[Worm bin at Sembradores Urbanos]]in Mexico City
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|File:2005 zaragoza system.jpg| [[Zaragoza Solar Hot Water System]]: Solar hot water system for a residence in Parras, Coahuila México.
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Latest revision as of 18:48, 2 December 2015


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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.



Solar heater
Solar hot water describes active and passive solar technologies that utilize the sun’s freely abundant solar thermal energy in order to heat water for a desired application. It is one of the most efficient ways to heat water (in terms of energy/waste), as it requires no energy conversion, unlike electric-resistance heating or fuel burning. It is a simple transfer and concentration of heat energy from one place to another. Another interpretation of the efficiency of the practice is that the solar energy is free, and only dependent on the extent of the technology used, and its cost and efficiency. In other words, the energy is free, only the collection, conversion, and storage devices cost.

If you have ever felt hot water trickle out of a garden hose that’s been sitting in the sun, you’ve experienced solar hot water in action. Essentially, a solar hot water system is made up of a solar thermal collector, a well-insulated storage container, and a system for transferring the heat from the collector to the container vis-à-vis a fluid medium, which in some circumstances is the water to be used itself.



Wild Chick Farm

Recent winners of the $25,000 Economic Fuel award. Wild Chick Farm pecks ahead on local sustainable chicken raising.


Community action news more Hot topics
Street Party Table.jpg



Tim Jarvis on his Antasrtic expedition
Thinking is good, but doing is better.

Tim JarvisW
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.


edit  watch   Selected service learning Projects gallery (refresh)

ENGR 215 Introduction to Design projects – Spring 2011: Locally Delicious: The Spring 2011 semester of Engineering 215 worked with Locally Delicious to design, build, test and disseminate projects that support healthy lifestyles among youths grades 4th through 6th and their families.

Spring 2011 ENGR 215 Intro to Design Projects - Locally Delicious
Tear the Roof off
Dry sliced apples in 18 hours of sunlight with this legless solar dehydrator  
The GnomeTainer
Modular, raised garden with integrated rain catchment that can be installed on a porch  
Catch and Cook
A solar oven capable of reaching 160°F in 20 minutes  
Solar Bowling Oven
Solar oven kids can build and use on their own  
Wormland worm bin
Scalable vermiculture system from free materials for kids  
Row Blender
Row yourself a smoothie with an exercise powered blender  
Sodhoppers' Solar Dehydrator
Durable food dehydrator for a school from a waste kitchen cabinet  
Interactive School Garden
Modular school garden design incorporating several different garden styles  
The Solar Swing
Solar oven for a school reaching 200°F in 30 minutes  
School Worm Bin
Worm bin for a school built from a 55 gallon drum  


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Construction zone — correct mistakes & flag spam as needed

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