Awe' -Itche Ashe' Good Earth Lodges is a Crow Tribal pilot project which utilizes the surrounding materials on the Crow Reservation to produce Compressed Earth Block.
Drying room and palleted earth bricks shown.
Compression Test, and discussion slurry test and kilning process.
{youtube]X1l2jcGEoSo[youtube]
International Development Enterprises, India (IDEI) has installed treadle pumps that provide rural farmers with low-cost irrigation.
http://www.youtube.com/user/AshdenAwards#p/u/5/K4jv0xlbuQs
The Solar Energy Foundation has installed PV pnaels in Rema, Ethiopia and set up a solar energy training school.
http://www.youtube.com/watch?v=LrtINiLgNKY&feature=related
In Kerala, India a company called BIOTECH is running a food-waste-to-energy enterprise:
"BIOTECH has succeeded in tackling the problem of the dumping of food waste in the streets of Kerala through the installation of biogas plants that use the food waste to produce gas for cooking and, in some cases, electricity for lighting; the residue serves as a fertiliser. To date BIOTECH has built and installed an impressive 12,000 domestic plants (160 of which also use human waste from latrines to avoid contamination of ground water), 220 institutional plants and 17 municipal plants that use waste from markets to power generators. The disposal of food waste and the production of clean energy are not the only benefits of BIOTECH's scheme. The plants also replace the equivalent of about 3.7 tonnes/day of LPG and diesel which in turn results in the saving of about 3,700 tonnes/year of CO2, with further savings from the reduction in methane production as a result of the uncontrolled decomposition of waste, and from the transport of LPG."
http://www.youtube.com/watch?v=KM9SZyPpm-I&feature=related
Farmer Jose Elanjhimattam demonstrates how he converts dung from his cows into biogas.
"CHOICE Nepal: Biogas":
http://www.youtube.com/watch?v=N8UVrQnfR_4
An NGO called CHOICE (http://choicenepal.blogspot.com/) helps Nepalese villagers install biogas digesters.
"William Kamkwamba: How I built my family a windmill"
http://www.youtube.com/watch?v=G8yKFVPOD6o
At the TED 2007 conference, William Kamkwamba talks about how he built a windmill for his family.
"IDEAS Energy Contest: Waste banana ethanol":
http://www.youtube.com/watch?v=WJgJTpWa--Q
The creator of a banana-waste-to-ethanol biogas digester talks about his project.
"ICT4D to Scale Cervical Cancer Prevention"
http://www.youtube.com/watch?v=RmqSnYyiA4E&feature=related
This video is about using ICT4D to screen for cervical cancer in Zambia.
"Nomads in Ethiopia Receive Education on the Move"
http://www.youtube.com/watch?v=x_D8tnr43GE&feature=channel
A video about hygiene education taught from the backs of camels and in the shade of trees in Ethiopia:
"Thousands of charities and non-governmental agencies do development work in Africa, spending billions of dollars trying to make the continent a better place. There is a vigorous international debate over such assistance. While some projects claim success that provides new opportunities, critics contend that development money often does little good and can make matters worse. On a visit to Ethiopia's remote Afar region, correspondent Peter Heinlein found a development group that found success where others failed by 'following the clouds'."
http://www.youtube.com/watch?v=_dIz7nFufeI
UNICEF works on latrine construction and BCC programs in Mali
http://www.youtube.com/watch?v=_Xn7YTzPydE&feature=related
Good explanation of how fog collection technology works, along with specific project example in Eritrea
http://www.youtube.com/watch?v=6H6YBkqB4Ic&feature=related
Continuation of Indian household survey project
http://www.youtube.com/watch?v=c29gXgIw3ek
Glimpse into household survey project in rural India
http://www.youtube.com/watch?v=FtwVO0g36_8
Efficient cook stoves from Aprovecho win them the 2009 Ashden Award
http://www.youtube.com/watch?v=G8sMAolVUEw
Really innovative water transportation device. Great example of designing for bottom billion.
http://www.youtube.com/watch?v=iK6uY_csrBg
Good overview of treadle pump project- from technology to a very creative BCC technique.
This is the tent of our friend and staff person Enel. Enel works on our water truck delivering clean water for free in Cite Soleil. Enel's house has been damaged to the point where it is unsafe. Along with his neighbors, he has built a makeshift tent out of plastic, bed sheets, twine and rope.
Outside a makeshift Haitian earthquake refugee camp.
http://www.youtube.com/watch?v=U7IGsG0TzUo
This video has good visuals of applying mortar to the metal mesh but does not cover mixing.
http://www.youtube.com/watch?v=_jBrgVqyVLA
TechfortheRealWorld Ferrocement Storage Tank constructed in SC.
http://www.paulpolak.com/html/media_video_water.html
Paul Polak describes storage tank need and design.
The Solar Electric Light Fund (SELF) helps to set up a solar drip irrigation system in Benin.
The BioSand Water Filter is an adaptation of slow-sand filtration that is designed for use by families at the household level. This award-winning water filtration technology was developed by Dr. David Manz, a former University of Calgary professor.
The filters are a proven, effective, and inexpensive technology. From start to finish the filters can be constructed in roughly 10 days, at an average cost of $100, which covers the raw materials, construction, transportation, supervision, training for the family in filter maintenance and personal hygiene, as well as monitoring and evaluation.
The filter removes organisms responsible for diseases spread by water, such as cholera, typhoid fever, and amoebic dysentery. The filter also strains out particles causing cloudiness, and much of the organic matter responsible for taste, colour, and odour.
Using energy from the sun, the KYOTO BOX is a $5 solution to the mounting problems faced by 3 billion people who rely solely on wood for cooking fuel.
With the KYOTO BOX we can:
1. Help stop deforestation
2. Help remove indoor smoke pollution. 1.6 million deaths every year
3. Cleans water. Water-borne diseases kill 10 million people every year
4. Lowers cost of energy since the sun provides free fuel
5. Reduce spinal cord injuries from carrying firewood
6. Reduce rape and landmine injuries from young girls fetching firewood
7. Reduce time waste from fetching firewood and allows kids to attend school
8. Cook food slowly, retaining important vitamins
9. Reduce fire hazard
10. Reduce CO2 emissions
A stove powered by the sun is making a big difference in impoverished countries.
http://www.homemadepowerplant.com/?ho... Professor David Faiman, Head of the Ben-Gurion National Solar Energy Research Center and developer of a new solar cell that can produce over one thousand times more electric power than a conventional photovoltaic or PV, states, 'The achievement is that we separate out the collection function of a photovoltaic cell to the light conversion to electricity function. When we collect the light, instead of using a huge area of solar cells, we use an equal area of cheap glass mirrors and they are curved in such a way as to concentrate the light onto a very small solar cell, the size of just one cell, and in this way you concentrate the light a thousand times and you can get a thousand times more power out of a small cell.' This is truly an amazing development with several practical applications.
Professor David Faiman director of the national center for solar energy has developed a new type of solar power that might be the answer to future world problems when oil runs out.While Middle Eastern countries may disagree on many issues, the sun is something everyone shares.08/20/07
MIT students use car parts and plumbing supplies to produce heat, electricity and cooling for developing countries.
Video to raise awareness for improving water and sanitation
Project for Awesome fundraising efforts pay off!
http://link.brightcove.com/services/player/bcpid72991358001?bclid=72861049001&bctid=70652829001
Another link to Water for People video blog.
Water for People has videos available on line that portray their approach to providing clean water.
http://link.brightcove.com/services/player/bcpid72991358001?bclid=72861049001&bctid=70652829001
The SEM Fund, or the Senegal Eco-village Micro-finance Fund, is a 501(c)(3) nonprofit dedicated to alleviating poverty by providing low-interest business loans aimed at strengthening the business skills and livelihoods of highly motivated micro-entrepreneurs that are excluded from the commercial banking system. Currently, they are focusing on the thirty-three poverty-stricken villages in the West African nation of Senegal, all part of the Global Eco-village Network, Senegal (GENSEN).
Tie Techniques for wire mesh, rebar, and lath used in ferrocement construction.
At the very least the accessibility and communication of the data collected in the Community-wide Childrens Health Assessment and Planning Survey (CCHAPS), if not more, are an example of Level 5 on a capacity analysis for a health survey. If you are interested, check out their website: https://www.cchaps.org/English/Pages/default.aspx. All data is accessible to anyone who registers and they walk through step by step their process and results. This video is just a short synopsis of the assessment, but the website offers many additional helpful details.
Micro-hydro water wheel system showing components.
Designed in, and named for Jaipur, India; the prosthetic leg was designed to be inexpensive, quick to fit and manufacture, and to be water-resistant. The jaipur foot is fitted free of cost by Bhagwan Mahavir Viklang Sahyata Samiti, founded by Devendra Raj Mehta. It costs approximately U.S. $40. Dow India supports Bhagwan Mahavir Viklang Sahayta Samiti with polyurethene which is the new material used in the production of the prostheses. The new material increases the durability and the convenience of the leg.
[youtube]95321F21F37BCFF3&playnext=1&playnext_from=PL&index=37[/youtube]
Both an interesting concept and approach to building a technology.
How to empower children and create lasting change through "i can."
Video ends at 9:29 seconds after that some sort of commercial about traffic.
Construction of spherical water storage tank.
Designed for USA, but beneficial information no matter where you are.
"Take ordinary cement. Mix in an agent called a photo-catalyzer (titanium dioxide, if you really want to know), which speeds up the natural process that breaks down smog into its component parts. Now start paving things with the stuff. That's what they're doing in Segrate, an Italian town near Milan. The smog-eating cement is called TX Active, and the Italian firm Italcementi spent 10 years developing it. Now there's a busy street in Segrate that's covered with it, and Italcementi claims it has reduced nitric oxides in the area by as much as 60%. Bonus: buildings made with TX Active stay cleaner too." - TIME Magazine, TIME's Best Inventions of 2008
Read more: http://www.time.com/time/specials/packages/article/0,28804,1852747_1854195_1854176,00.html
Easy to light and easy to use, StoveTec Stoves make cooking with wood or charcoal effective and enjoyable. Cooks can boil 1 gallon (5 liters) of water in 20 minutes using just three 1.5 inch in diameter, 12 inch long sticks of wood (4 x 30 cm). One additional stick is enough to simmer for another 45 minutes. Designed and built to cook three meals a day, every day, StoveTec Stoves are durable and dependable.
Stove Features:
* 23,900 BTU of Cooking Power
* Rugged Cast Iron Stove Top Available in Multiple Sizes
* Easy-To-Clean Steel Body
* Sturdy, Heat Resistant Handles
Stove Includes:
* Steel Stick Support
* Adjustable Pot Skirt (fits pot sizes between 5” and 11”)
Prices:
* Wood Stove = $37
* Wood-Charcoal Stove = $40
Pervious pavement / porous pavement consists of a permeable surface course underlain by a uniformly-graded stone bed. Stormwater drains through the surface, is temporarily held in the voids of the stone bed, and then slowly drains into the underlying, uncompacted soil mantle. The Morris Arboretum, in Philadelphia, PA, has successfully integrated this BMP into its parking areas to control rainwater runoff and help improve water quality in the local creek.
Ecological Sanitation is an important new approach to sanitation, which is truly sustainable. It uses almost no water in its operation, and human waste products are used as fertilizer. So three major objectives are achieved:
-- saving on water, a critically scarce resource
-- non-pollution of the environment by human waste, a major cause of disease and loss of human life
-- 'closing the nutrient cycle' : the nutrients (primarily Nitrogen, Phosphorus, Potassium, and carbon matter) in our excreta goes back into the soil for re-use by plants. Instead of a one-way process where chemicals are mined and used for each crop produced, the same chemicals are returned to the soil for reuse.
This movie was created by UNICEF
Director of Nepal Water for Health, Umesh Pandey, talks about water issues in Nepal.
Learn more about this project at South Asia's Troubled Waters: http://www.pulitzercenter.org/showpro...
And join the conversation by sharing your story about water here: http://waterwars.pulitzergateway.org/...
This video can be downloaded here: http://www.ashdenawards.org/winners/bsp BSP won an Ashden Award for Sustainable Energy in 2005. To find out more visit the link above and check out the Ashden Awards Blog http://ashdenawards.blogspot.com
The Biogas Sector Partnership (BSP) in Nepal managed the installation of over 124,000 domestic biogas plants in Nepal between 1992 and 2005. The plants use cattle manure to provide biogas for cooking and lighting. In addition, about 75% of the plants incorporate toilets.
About 80% of the 4.2 million households in Nepal use fuelwood, cattle-dung cakes and agricultural residues for cooking, and kerosene for lighting. Demand for fuelwood substantially exceeds the rate of regrowth, and this is leading to degradation of the land and damage to vital watersheds. Cooking indoors over open fires, and lighting with kerosene, gives dangerous exposure to air pollutants and a high risk of fire, particularly for women and young children who spend much of their time indoors. In addition, women and girls have the drudgery of collecting fuelwood, which typically takes three hours each day.
The Ashden judges commended this project for the many benefits which it provides. The biogas plants replace nearly all the use of fuelwood, and make cooking easier, cleaner and safer. In 20% of houses biogas provides safer lighting as well. This saving of unsustainable fuelwood use also reduces carbon dioxide emissions. The provision of toilets improves sanitation; and the effluent from the biogas plant is a valuable organic compost.
The use of cattle dung to generate biogas is well known in the Indian subcontinent, but in no other place has it been used with such success as in Nepal. The scale of the programme is remarkable. Biogas already serves about one million people (4% of the population of Nepal), and the biogas sector provides about 11,000 permanent jobs in the country. If anyone needed to be convinced that 'small scale can be big' then they need look no further! The Ashden judges also recognised the excellent collaboration between different organisations (BSP, government, construction companies, donors, finance organisations) in order to achieve such outstanding results.
This video can be downloaded here: http://www.ashdenawards.org/winners/s... Shaanxi Mothers won an Ashden Award for Sustainable Energy in 2006. To find out more visit the link above and check out the Ashden Awards Blog http://ashdenawards.blogspot.com
The Shaanxi Mothers' Environmental Protection Volunteer Association (Shaanxi Mothers) is led by its founder Mrs Wang Mingying. It has installed 1,294 biogas plants in rural farming households in the Shaanxi Province of China since 1999. The plants produce biogas from pig and human waste.
The extensive use of wood and coal that has helped to fuel China's rapid economic growth has led to serious environmental damage. In Shaanxi Province (west China), soil erosion on the hillsides is widespread and springtime flow in the rivers has diminished to a fraction of the 'normal' flow. Erosion leads to dust storms and poor outdoor air quality. The use of coal and wood on open fires produces significant pollution. Faced with these problems, the Chinese Government has restricted tree-felling and ordered the re-forestation of the terraced hillsides. Farmers are paid to plant trees and ensure that they survive, and are encouraged to keep pigs. Subsidies are provided to encourage the use of biogas.
Shaanxi Mothers promotes the use of biogas plants connected to the pigsties. These plants provide clean fuel for cooking and lighting, improve sanitation and hygiene and help prevent further environmental degradation. The solid residue from the plants is a valuable fertiliser. Users pay about one third of the cost of the plant which can be covered by the savings they make on fuel and fertiliser within one to two years. Subsidies from the government and Shaanxi Mothers provide the remainder of the cost.
The Ashden Award to the Shaanxi Mothers' Environmental Protection Volunteer Association recognises the tremendous commitment of a small volunteer organisation in bringing the health and environmental benefits of biogas to rural communities in China.
This video can be downloaded here: http://www.ashdenawards.org/winners/b... BIOTECH won an Ashden Award for Sustainable Energy in 2007. To find out more visit the link above and check out the Ashden Awards Blog http://ashdenawards.blogspot.com
BIOTECH has succeeded in tackling the problem of the dumping of food waste in the streets of Kerala through the installation of biogas plants that use the food waste to produce gas for cooking and, in some cases, electricity for lighting; the residue serves as a fertiliser. To date BIOTECH has built and installed an impressive 12,000 domestic plants (160 of which also use human waste from latrines to avoid contamination of ground water), 220 institutional plants and 17 municipal plants that use waste from markets to power generators. The disposal of food waste and the production of clean energy are not the only benefits of BIOTECH's scheme. The plants also replace the equivalent of about 3.7 tonnes/day of LPG and diesel which in turn results in the saving of about 3,700 tonnes/year of CO2, with further savings from the reduction in methane production as a result of the uncontrolled decomposition of waste, and from the transport of LPG.
Modern Biogas Operation Demonstration
This is a video of how to make a wood gas stove. A wood gas stove uses to stages of combustion. Stage 1 converts the wood to a gas, and stage 2 combustion the gas with the help of addition high temperature oxygen (or air) inlet near the gas combustion zone. The gas combustion zone is above the wood combustion zone.
Note, in the video, the two sets of vent holes—one set at the bottom of the outer (bean) can and one set at the top of the inner (soup) can. The bottom vent holes inlet air for both stages of combustion; a fraction of the inlet air passes directly into the bottom of the inner can and is used for combustion of the wood (stage 1), while the reaming fraction of the inlet air is heated as it passes up between the walls of inner and out cans, and finally through the top vent hole of the inner can. This is the high temperature air is what drives the stage 2 combustion process.
Some models use a small fan to “force” inlet air. Wood-gasification is one of the cleanest forms of combustion because it not only combusts the wood, but it subsequently combusts the gas produced from the initial combustion of the wood. This gas usually contains several pollutants, so when the gas is combusted, many of the pollutants get destroyed. Also, these stoves produce extremely high temperatures and are therefore very efficient.
Commonly referred to as wood gasifiers or wood-gas stoves.
http://www.youtube.com/watch?v=gZitudZB7Xo
This is a more appropriate biodigestor in Spanish.
An alternative model for farming based on zero use of fossil fuels. The main idea is to follow a natural model where different animals make the work that machines do.
An interview with a local in the Peruvian high Andes in Ayaviri. The lack of water from glacier melt is visible and making the poor even poorer.
"table top" pico hydro system for small device charging and lighting.
Using GIS to track deforestation can help communties see the need for and help in the development of land use plans.
Community-based health centers are improving survival rates of children in Senegal. A particularly interesting bit of this video is the inclusion of grandmothers as a part of the solution.
Athoi, a community member who received training on good health and sanitation practices, uses her knowledge to help her community in Bangladesh. By making visits to houses and teaching school children, her message has created successful behavior change in her community.
Uncultured Project review of LifeStraw filter.
In the developing world, access to incubators is limited by cost and distance, and millions of premature babies die each year. TED Fellow Jane Chen shows an invention that could keep millions of these infants warm -- a design that's safe, portable, low-cost and life-saving.
**Ignore the last two minutes, it's just an advertisement tacked on to their YouTube posts.
Trekking guide Damadon Pyakurel talks about hydro power, what it was like growing up without electricity and the tension with India and China.
Nepal does have one resource in abundance: water. And its neighbours are looking to exploit that resource to power their economies with hydroelectricty.
Meanwhile Nepal is left suffering an energy crisis and regular blackouts.
But China and India hold sway over Nepal... politically and economically.
And as Matt McClure reports Nepal's new government may end up serving its neighbours' interests ahead of its own.
This video has been produced by People Energy and Environment Development Association, ( PEEDA ) in Nepal and serves as a brief description of the Low-head Pico-hydro Promotion Project. The technology has been developed by Nepal Hydro Electric with assistance from international partners such as the United Mission to Nepal (UMN). This technology now needs to be made available in all districts of Nepal. PEEDA's goal is to provide green electricity to rural communities from their own water resources ..... poverty alleviation through sustainable energy development.
Haiti, the place to start is water. That is the message of our short film - 7 minutes - about the work of International Action in Port-au-Prince.
Our group installs chlorinators on public water tanks. Our first installation was in May 2006 and we have since installed 110 chlorinators.
Today, we serve 400,000 Haitians with clean water in nearly 40 neighborhoods of the capital city.
Since May of 2006, International Action has installed more than 100 tablet chlorinators in 23 of the poorest neighborhoods of Port-au-Prince. These chlorinators protect water supplies for some 300,000 people. The neighborhoods include Tokyo, Trousable, Simmond Pele, Cite Soleil, Carrefour and Delmas some of the poorest and most dangerous parts of the capital. For some, it is the first help they have had in many years.
Project Peanut Butter is a program founded by Dr. Mark Manary in an attempt to combat and eventually eradicate malnutrition within our lifetime. His specially designed peanut butter-like pastes are made from peanuts, powdered milk, oil, sugar, and vitamins and minerals, and provides the specific, high-quality nutrition children need to recover, survive, and even thrive. Today, PPB serves hundreds of thousands of malnourished children in Malawi with outstanding results.
This video is of a highly mobile, small scale water purify that is solar powered. In particular, it is applicable to developing communities/countries. It uses a series of mechanical filters to remove organic contaminants, and UV light to disinfect pathogens. The Naïade is made by Nedap: a company located in the Netherlands with sound base of knowledge in electronics, solar energy, and light applications. It is a leader in the field of electronics for purifying drinking water using UV light.
Since May of 2006, International Action has installed more than 100 tablet chlorinators in 23 of the poorest neighborhoods of Port-au-Prince. These chlorinators protect water supplies for some 300,000 people. The neighborhoods include Tokyo, Trousable, Simmond Pele, Cite Soleil, Carrefour and Delmas some of the poorest and most dangerous parts of the capital. For some, it is the first help they have had in many years.
This video is a collection of 12 rocket stove mass heaters. A rocket stove is more efficient, less polluting alternative to most traditional stoves found in developing communities. A rocket stove mass heater is the former with the addition of a longer exhaust system used to perform two functions: (1) to exhaust all the smoke from the stove fire and (2) to heat a thermal mass. Examples of 12 different thermal masses are illustrated in this video.
This video shows a collection of 12 rocket stove mass heaters. A rocket stove is more efficient, less polluting stove then most traditional stoves found in developing communities. A rocket stove mass heater is the former with the addition of a longer exhaust system used to perform two functions: (1) to exhaust all the smoke from the stove fire and (2) to heat a thermal mass.
The device is from the organization Project H Design (http://projecthdesign.org/index.html), which "connects the power of design to the people who need it most, and the places where it can make a real and lasting difference."
An outdoor classroom made from recycled tires.
http://projecthdesign.org/projects/learninglandscapes.html
This is from the organization Project H Design and they describe the project as:
"Learning Landscape is a scalable, grid-based playground system for elementary math education. The spatial grid is intended to combine active movement and competition with mathematic curricula, providing an outdoor classroom framework for fun and engaged learning."
DIY solar water "collector" made from recycled materials
Is NOT made from recycled materials
Introduction to the ceramic pot filters produced by Resource Development International - Cambodia (RDI-C). Their program not only involves high-quality production processes, but also excellent education components with culturally appropriate delivery(as evident in the video) and supply chain access for the end-users of the filters.
Here's an explanation of how a biosand filter for those of us with short attention spans.
Seriously though, these things took a lot of research by many dedicated field workers and scientists. They are deceptively simple which makes them an incredible solution for the world water crisis.
[youtube]LgMaNZ8k0sg [/youtube]
The SkyHydrant™ purifies the water without the need for electric power or chemicals. The units can be a single stand alone installation or manifolded
22 Jan 2010, 5:36 pm
Tag:
Strength of Malindi women
www.ntv.co.ke A primary school in Malindi is set to benefit from pit latrines constructed by a womens group in the area. The women took it upon themselves to construct the latrines for Laini Primary, when it was discovered that no one was willing to do the manual labour, after construction material was donated. ... ntv kenya Primary School Malindi women latrines dig
Worm bins can be useful in controlling the spread of infectious disease while providing high quality fertilizer, and income from selling worms for fishing and other worm bins.
thanks to, Youtube user: urhonduras
posted: May 21, 2007
(more info)
Building of slow sand filter in location near San Jose, Honduras. University of Rochester - Shoulder to Shoulder program - May 2007
This video shows a lever-operated press with compartments for individual briquettes.
This video shows a vertical press that uses a hydraulic jack.
Teaching adults to read is a difficult enough task in and of itself, but in rural Mali, teachers also face classrooms without electricity and books weathered by the punishing desert climate. Enter the Kinkajou Projector, a fusion of high and low technology that makes teaching night literacy classes as easy as ABC. LEARN MORE at http://www.designthatmatters.org
This video provides a procedure for manufacturing paper and sawdust briquettes using the Legacy Foundation Briquette Press (see the Legacy Foundation's Fuel Briquettes video below). Specific instructions included for briquettes having a paper/sawdust ratio of 60/40.
Part 1 includes: Materials, Preparing the Materials, and Preparing the Sludge
This video provides a procedure for manufacturing paper and sawdust briquettes using the Legacy Foundation Briquette Press (see the Legacy Foundation's Fuel Briquettes video below). Specific instructions included for briquettes having a paper/sawdust ratio of 60/40.
Part 2 includes: Loading the Cylinder, Using the Briquette Press, Releasing the Briquettes, and Drying the Briquettes
This video shows a compact, hand-lever operated briquette press.
This is a collection of existing videos on Sustainable and Appropriate Solutions used in the world today.The videos are divided by topics into several categories and sub-categories (see below).
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