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Sharing knowledge to build rich, sustainable lives.

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

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 320,511 edits and uploaded 25,218 files.
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Aprologo-old.png As we approach our ten-year anniversary, we are looking at how best to support Appropedia in the next ten years. Please share your thoughts with us on the idea of appointing an Executive Director.

The Geysers in Northern California.
Geothermal power is generated from the high temperatures that can be found in various parts of the earth's crust such as volcanoes, hot springs, and geysers. The water that surrounds and fills the gaps between the rocks in the crust is raised in temperature by these natural processes. This hot water is then pumped to the surface and its steam is captured and used to create electrical power through a turbine system.

There are three common types of geothermal power: dry steam, flash steam, and binary cycle. Dry steam is rare and uses the steam directly from the earth, flash steam pumps the hot water that naturally occurs in the earth to the surface and utilizes its steam, and binary cycle uses a secondary fluid and its vapor to power a generator.

Dry stream geothermal plants use natural steam directly from the Earth. Once the steam pocket is tapped, the steam is channeled directly into a turbine which converts the thermal energy into electrical power. (more types follow)

Parabolic basket and tin can solar cooker

Creating a solar cooker out of local invasive species and waste materials in order to pasteurize water and be an alternative to the use of fossil fuels for cooking food.

Albert Einstein
The only source of knowledge is experience.

Albert EinsteinW
Sharing knowledge to build rich, sustainable lives.
Appropedia is the site for collaborative solutions in sustainability, poverty reduction and international development through the use of sound principles and appropriate technology and the sharing of wisdom and project information. It is a wiki, a type of website which allows anyone to add, remove, or edit content. Registration is encouraged but not required for contributors.

Appropedia has been described as an "appropriate technology wiki," but it is much broader than that - it is a green wiki, and a wiki for all matters of international development and aid. But most importantly, Appropedia is an open site for stakeholders to come together to find, create and improve scalable and adaptable solutions. For more about our motivation, see Appropedia:Mission.

To create a new project page, first browse the project articles and subcategories below for examples and check for possible collaboration opportunities, such as articles similar to what you're considering writing. If you are looking for ideas for your own project, check out our suggested projects. It is highly encouraged to tag your projects with their status -- you can do this with a few templates. Be Bold!

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ENGR 215 Introduction to Design projects – Fall 2011: Flock House: The Fall 2011 semester of ENGR215 Introduction to Design worked with the Flock House to research, design, and build sustainable and inspiring systems for two living systems that will be traveling through and interacting with various New York neighborhoods.

Fall 2011 ENGR 215 Intro to Design Projects - Flock House
Plastic Plumage and Bird Cage
Corrugated plastic shell and one gallon milk carton shingles  
Aluminum Awareness
Aluminum can shingles and 2-liter bottle windows  
Poly Pod
Doors, windows, and planters made from ironed plastic bags and bubble-wrap, with umbrella awnings  
Geared-Up From the Feet-Up
Bicycle powered generator capable of generating 100+ Watts  
Pump'n Power
A handcar styled, two person, human powered, energy generator  
Hyper Visible Power Meter
A post-apocalyptic, bomb-like, display for the state of the Flock House batteries  
Window Shopper and Back Me Up
Flock House solar dehydrator and backpack solar dehydrator  

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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
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New pages being developed:
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  5. Sponsors/FAQ/Discussion
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  8. Rose
  9. Hand cultivator
  10. Choosing between seeds and seedlings

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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Create a new page:

  1. Organic waste
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  9. Conservation biology‏‎
  10. Paper

These red links are invitations for you to contribute your knowledge.

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We want your projects, current works, observations and wisdom! See Contributing content. Improve articles by clicking "edit" at top of the page or section. Our philosophy is: Be Bold and contribute!

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