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Revision as of 14:47, 13 December 2011

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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 encouraged 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 396,444 edits and uploaded 32,000 files.
Browse our categories or all 8,348 articles.

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Announcements — more

To catch the rain cover.png Rainwater catchment around the world. Get a paperback on Amazon or free digitally at http://www.tocatchtherain.org.


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Selected page (refresh)

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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Highlighted project (refresh)

Corn Cob Charcoal Crusher

Turning corn cob agricultural waste into a cooking fuel that combats deforestation and indoor air pollution.

Aleiha's parabolic solar cooker
In physics, energy is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems. Since work is defined as a force acting through a distance (a length of space), energy is always equivalent to the ability to exert pulls or pushes against the basic forces of nature, along a path of a certain length.

Sustainable energy is the provision of energy that meets the needs of the present without compromising the ability of future generations to meet their needs. Sustainable energy sources are most often regarded as including all renewable energy sources, such as hydroelectricity, solar energy and power, wind power, wave power, geothermal energy and power, biomass fuel and energy, and tidal power. It usually also includes technologies that improve energy efficiency.

While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas, where energy is often crucial in human development. As of 2011, small solar photovoltaic (PV) systems provide electricity to a few million households, and micro-hydro configured into mini-grids serves many more. Over 44 million households use biogas made in household-scale digesters for lighting and/or cooking, and more than 166 million households rely on a new generation of more-efficient biomass cookstoves.

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New pages being developed:
  1. Open Source Completely 3-D Printable Centrifuge
  2. Computer vision based real-time 3D printing analysis
  3. Mechanical Properties of Ultraviolet-Assisted Paste Extrusion and Postextrusion Ultraviolet-Curing of Three-Dimensional Printed Biocomposites
  4. Computer vision and macine learning background
  5. Love your local market
  6. Caster and Wheel Maintenance Guide
  7. Caster Wheel Material Application Guide
  8. Caster Wheel Terminology
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