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Sharing knowledge to build rich, sustainable lives.

Appropedia is for collaborative solutions
in sustainability, appropriate technology and poverty reduction.

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Announcements — more

Sludgecontest.jpg As part of the Emergency Sanitation Project, the International Federation of Red Cross and Red Crescent Societies announce a student emergency sanitation design project. Deadline 3 March 2014


Earth bound radiation losses
The solar resource. Solar energy is the source of all energy on earth, available to us in a number of derivatives. Plant matter for example, which relies on solar energy for nutrition, experiences natural compression and decomposition over millions of years to form the the fossil fuels we use today for electrical generation and transportation. Other examples of this can be seen in use of biomass for fuel or the harvesting of wind energy which is reliant on solar heated air for the formation of currents.

We are also able to utilize the solar resource directly. Solar thermal technologies take advantage of this resource to heat a working fluid that can transfer energy to an air stream or water for domestic or commercial use. Solar Photovoltaic or PV devices exploit various materials (principally Silicon) that experience sub-atomic variations when exposed to solar energy in order to induce an electric current. Both solar PV and thermal technologies provide a useful source of energy with little to no moving parts, no pollution and very little embodied energy.

Decreasing turbidity to optimize solar water disinfection

Salt and sunlight can actually be used to clean water with the SODIS method.

Bill Mollison talking about the future.
You don't have a snail problem, you have a duck deficiency.

Bill MollisonW
You can have a green Christmas.
Green living (or sustainable living) is about practical choices, large and small, to preserve the earth and have a better quality of life. It is a lifestyle that attempts to reduce an individual's or society's use of the Earth's natural resources and his or her own resources.

In order to make sustainable choices, it is very helpful to have solid, reliable information that tells us which behaviors are sustainable and which are unsustainable. In quantitative terms, which actions will make the greatest difference, and should be prioritized. Green living can be high tech (buying a hybrid vehicle), low tech (green cleaning, or completely "back to nature." It can be smart grid or off the grid. Sustainable city living explains some of the areas of action for a city dweller.

Practitioners of sustainable living often attempt to reduce their carbon footprint by altering methods of transportation, energy consumption and diet. Proponents of sustainable living aim to conduct their lives in ways that are consistent with sustainability, in natural balance and respectful of humanity's symbiotic relationship with the Earth's natural ecology and cycles. The practice and general philosophy of ecological living is highly interrelated with the overall principles of sustainable development.

edit  watch  Selected service learning Projects gallery (refresh)

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.

HBCSL cobb oven

A cobb oven for the Humboldt Bay Center for Sustainable Living  
HBCSL solar shower

A solar shower for the Humboldt Bay Center for Sustainable Living  
Jefferson Community Center compost

A large composting system for Jefferson School  
Jefferson Community Center E305 teach-in

A vermicomposting workshop  
Kiva's straw bale greenhouse

A straw-bale greenhouse  
M Street Eureka rainwater catchment

A rainwater catchment system for residential property  
Mattole Community Center rainwater catchment

A rainwater catchment from the roof of the Mattole Valley Community Center in Petrolia  
Millcreek greywater

A residential greywater processor  
Old Growth Cellar rainwater catchment

A rainwater catchment system for Old Growth Cellars  

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Selected categories

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Construction zone — correct mistakes & flag spam as needed

Newest articles more Wanted pages - click to add info more
Under construction
New pages being developed:
  1. Dublin
  2. Temperature Scales and Conversions
  3. 3D printing a house
  4. CCAT MEOW/OM project instructions
  5. Ireland
  6. HEIF CCAT solar hot water system/OM
  7. CCAT greenshed cob wall/OM
  8. CCAT rocket stove/OM
  9. CCAT greenshed cordwood wall/OM
  10. CCAT greenshed west wall/OM

Note: Appropedia's newest pages may not yet comply with our policies. Page titles in italics are "redirects," often created when moving a page.

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  1. Animals
  2. Organic waste
  3. Nutrition
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