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(announce design comp; Shrink intro a little - "Want to collaborate..." and try "ideas" instead of "wisdom")
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<big>''Sharing knowledge to build rich, sustainable lives.''</big>
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{{:Welcome to Appropedia/box-header|<big>''Sharing knowledge to build rich, sustainable lives.''</big>|:Welcome to Appropedia/Intro|titleforegroundlink=white}}
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{{:Welcome to Appropedia/box-footer‎‎}} <!-- INTRODUCTION -->
  
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{{:Welcome to Appropedia/box-header|<big>Announcements &mdash; [http://blogs.appropedia.org/tag/announcements/ ''more'']</big>|:Welcome to Appropedia/Announcements|titleforegroundlink=white}}
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|<center><big>3-D Printing Design Comp - 1st prize $1000.
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See '''[[Open source sustainability 3-D printing design competition]]''' </big>
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| <center>Want to collaborate & share ideas for '''sustainability''', '''poverty reduction''' and '''international development'''? You're at the right place - see our [[Appropedia:Mission|Mission]].</center>
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| <center>Contributors have made [[Special:Recentchanges|{{NUMBEROFEDITS}} edits]] and uploaded [[Special:Newimages|{{NUMBEROFFILES}} files]].<br>
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Browse our [[Appropedia:CategoryTree|categories]] or [[Special:Allpages|all '''{{NUMBEROFPAGES}}''' pages]].  </center>
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|width=50%  style="color: #EEEECC;background:#818CA5;border-right:2px solid #818CA5;border-top:0px ;padding-left: .9em;padding-right: .9em;"| <center>'''Announcements - [http://blogs.appropedia.org/tag/announcements/feed/ ''more'']'''</center>
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<center>'''[http://blogs.appropedia.org/2011/08/28/intellectual-property-public-domain-internship/ Intellectual property internship]'''</center>
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<center>'''[[Open source sustainability 3-D printing design competition]]'''</center>
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|width=50%  style="color: #EEEECC;background:#818CA5;border-right:2px solid #818CA5;border-top:0px ;padding-left: .9em;padding-right: .9em;"| <center>'''Hot topics / In the news'''</center>
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|valign="CENTER" style="background:#CCFFCC; border-left:2px solid #818CA5; border-right:2px solid #818CA5;border-bottom:0px solid #818CA5;padding: 0.3em;"|<center>
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; [[Occupy Sustainability]]
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; [[Orphanage tourism]]
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; [[Liter of light]]
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|width=50% style="color: #EEEECC;background:#818CA5;border-right:2px solid #818CA5;border-top:0px ;padding-left: .9em;padding-right: .9em;"| <center>'''Popular pages  - ''[[Special:PopularPages|more]]'''''</center>
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|valign="CENTER" style="background:#CCFFCC; border-left:2px solid #818CA5; border-right:2px solid #818CA5;border-bottom:10px solid #818CA5; padding: 0.3em;"|<center>
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; [[Renewable Energy Dictionary]]
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; [[Ethanol from organic sugar beets versus refined cane sugar ]]
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; [[CCAT rocket stove]]
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{{:Welcome to Appropedia/Selected page}} <!-- SELECTED PAGE -->
  
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| width=28% valign=top |<br />{{Highlighted project}}
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| align=center style="color: #EEEECC;background:#818CA5;border-right:2px solid #818CA5;border-top:2px solid white;padding-left: .9em;padding-right: .9em;" | '''Construction zone - correct mistakes & [[Appropedia:Flagging spam|flag spam]] as needed.'''
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| width=50% style="color: #EEEECC;background:#818CA5;border-right:2px solid white;border-top:2px solid white;padding-left: .9em;padding-right: .9em;" | '''Newest Articles''' <sup>''[[Special:Newestpages|more]]''</sup>
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|width=50% style="color: #EEEECC;background:#818CA5;border-right:2px solid #818CA5;border-top:2px solid white;padding-left: .9em;padding-right: .9em;"| '''Wanted Pages''' - click to add info <sup>''[[Special:WantedPages|more]]''</sup>
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|valign="TOP" style="background:#CCFFCC; border-left:2px solid #818CA5; border-right:2px solid white;border-bottom:10px solid #818CA5;padding-left: .9em;padding-right: .9em;"|[[Image:Under construction orange.jpg|Under construction|right|80px]]
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New pages being developed:{{Special:Newestpages/-/10}}
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<small>Note: Appropedia's newest pages may not yet comply with [[:Category:Appropedia policy|our policies]]. Page titles in italics are "redirects," often created when moving a page.</small>
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|valign="TOP" style="background:#CCFFCC;border-right:2px solid #818CA5;border-bottom:10px solid #818CA5;padding-left: .9em;padding-right: .9em;"| [[Image:Under construction orange.jpg|Under construction|right|80px]]
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Create a new page:
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# [[Rural communities]]
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# [[Water well pump]]
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# [[Animals]]
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# [[Environmentalism]]
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# [[Deforestation]]
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# [[Organic waste]]
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# [[Nutrition]]
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# [[Hydrogen ]]
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<small>These '''[[A:Redlinks|<font color=red>red links</font>]]''' are invitations for you to contribute your knowledge.</small>  
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{{:Welcome to Appropedia/Selected project}} <!-- HIGHLIGHTED PROJECT -->
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</div><div style="float:right; width:100%; margin-top:-25px; margin-bottom:10px"> <!-- FULL WIDTH -->
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<!-- NOTHING LINE BREAK TO BALANCE TOPS OF NEXT SECTIONS -->
  
<small>Or [[Help:Creating a page|'''create a page''']] on the topic of your choice.</small>  
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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%-->
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{{:Welcome to Appropedia/box-header|<big>[[Community action for sustainability|Community action news]]</big>|:Welcome to Appropedia/CAnews||titleforegroundlink=white}}
| style="color: #EEEECC;background:#818CA5;border-top:2px solid white;border-right:2px solid #818CA5;padding-left: .9em;padding-right: .9em;"| '''<big>Please help Appropedia grow!</big>'''
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{{:Welcome to Appropedia/CAnews}}
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{{:Welcome to Appropedia/box-footer‎‎}} <!-- COMMUNITY ACTION NEWS -->
| style="background:#D9D2A9;border-right:2px solid #D9D2A9;border-bottom:10px solid white;padding-left: .9em;padding-right: .9em;" |<p>We want your projects, current works, observations and wisdom! Please see our [[Help:Contributing content|Contributing content]] page. You can also enrich existing articles by clicking on "edit" at the top of the page or section.  Appropedia's software is robust and forgiving, so '''[[A:BOLD|Be Bold]]''' and contribute!</p>
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<p>
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{{:Welcome to Appropedia/Selected quote}} <!-- SELECTED QUOTE -->
More info on helping out is at our [[Appropedia:Community portal|Community Portal]] page. Ask questions or leave comments at the [[Appropedia:Village pump|Village Pump]] page. You can also check out the Appropedia [[Appropedia:Mailing lists|mailing lists]]. [http://groups.google.com/group/appropedia-community Appropedia community] and [http://groups.google.com/group/tech-for-sustainability-wikis Site tech].</p>
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<p>Become a [http://www.facebook.com/appropedia Facebook Fan]. Follow us on [http://www.twitter.com/appropedia Twitter], [http://identi.ca/appropedia Identica] or [http://friendfeed.com/appropedia FriendFeed] Stumble our links at [http://nopanacea.stumbleupon.com/ StumbleUpon] or [http://delicious.com/nopanacea Delicious].  See our images at [http://www.flickr.com/photos/appropedia Flickr] and [http://www.youtube.com/appropedia YouTube]... and make sure to add us as a friend, subscription, resource, etc. wherever you are!</p>
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{{:Welcome to Appropedia/box-header|<big>Hot topics / In the news</big>|:Welcome to Appropedia/Hot||titleforegroundlink=white}}
{{Lang|[[Selamat datang di Appropedia|Bahasa Indonesia]] - [[Welcome to Appropedia|English]] - [[Bienvenido a Appropedia|Español]] - [[Willkommen bei Appropedia|Deutsch]] - [[Bienvenue sur Appropedia|Français]] - [[Benvenuto su Appropedia|Italiano]] - [[:Category:Português|Português]] - [[Karibu Appropedia|Kiswahili]]}}
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{{:Welcome to Appropedia/Hot}}
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{{:Welcome to Appropedia/box-header|<big>[http://blogs.appropedia.org/ Blog]</big>|:Welcome to Appropedia/Blog||titleforegroundlink=white}}{{:Welcome to Appropedia/Blog}}
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{{:Welcome to Appropedia/box-header|<big>Construction zone &mdash; correct mistakes & [[Appropedia:Flagging spam|flag spam]] as needed</big>|:Welcome to Appropedia/Construction||titleforegroundlink=white}}
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{{:Welcome to Appropedia/Construction}}
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{{:Welcome to Appropedia/box-footer‎‎}} <!-- CONSTRUCTION ZONE -->
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{{:Welcome to Appropedia/box-header|<big>Please help Appropedia grow!</big>|:Welcome to Appropedia/Grow||titleforegroundlink=white}}
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{{:Welcome to Appropedia/box-footer‎‎}} <!-- PLEASE HELP APPROPEDIA GROW -->
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Latest revision as of 09:10, 20 January 2016

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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 392,314 edits and uploaded 31,519 files.
Browse our categories or all 8,291 articles.

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Announcements — more

To catch the rain cover.png You made it happen! Get a paperback on Amazon or digitally at http://www.tocatchtherain.org.


edit  watch  Selected page (refresh)
Building a very hot parabolic solar cooker using pedal power tools.
Notice how the focus is the same for the various parabolas.
Aleiha's parabolic solar cooker. The paraboloid is an interesting shape with some amazing qualities. It has the power to concentrate light, electronic waves, sound, etc. to its focus at the center. To find the focal point of a paraboloid, one must use the formula, y=p*x^2, where p is a constant. The variable y is the depth of the dish, and x measures the distance from the center axis to the maximum circumference of the dish. You have to pretend that there is an x axis going through the center of the base of the dish and a perpendicular y-axis passing from the center of the base of the dish to the focal point. The two numbers, x and y, represent a point on the paraboloid, and from that, you are able to determine where the focus is.

Parabolic cookers have been used for centuries now. The idea to concentrate light using curved mirrors was developed by the Greeks, Aztecs, Incas, Romans and Chinese. The Incas used bronze and gold for their mirrors and they built structures that were several stories high. This technology seems to have appeared around the same time for each of the civilizations. It is thought that Archimedes harnessed the technologyW to defend Syracuse from invading Roman fleets in 212 BC.

edit  watch  Highlighted project (Book) (refresh)
CCAT natural paint project

Homemade house paints - exposed, exploited, examined and explained.

edit  watch  

Community action news

Wellington.JPG

Mar 7 New Zealand: River granted full rights of legal personhood

Mar 5 Sharing cities movement, Barcelona

Mar 5 Norway: Oslo Is (Almost) Car-Free -- And Likes It That Way [1]

Feb 20 Refettorio Gastromotiva, Rio de Janeiro

Feb 14 Zero Waste Challenge, Roubaix

Read More...


edit  watch  Selected quote
Estuary
884 million people lack access to safe water supplies; approximately one in eight people. That’s nearly 3 times the U.S. population.

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Hot topics / In the news

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Blog

Bicycle wheel
Transport. According to the Appropriate transport manual, sustainable transportation is a strategy for the flow of people and goods across the Earth that meets the needs of the present without compromising the ability of future generations to meet their own needs. Transportation accounted for 32.6% of US green house gas emissions in 2005. In addition to the widely publicized environmental consequences of driving automobiles, it is also socially and economically costly:
  • Land use: Parking and roads use valuable land resources.
  • Transportation equity: Driving, with all of its expenses, costs the average U.S. household $7,000 per year per vehicle.
  • Economics: Most of the money spent on driving leaves a local economy, weakening it.
  • Community: Travelers outside of their cars interact more with their physical environment and each other.
  • Safety: The presence of pedestrians and cyclists make our neighborhoods safer from crime. Conversely, 42,000 Americans are killed in car accidents every year.
  • Health: Increasingly, Americans are suffering from weight-related illnesses. This is partly attributable to the decline in active transportation use and availability.

Building and encouraging alternatives to the single-occupant vehicle, or, for short "alternative transportation," is imperative. Some alternative transportation advocates have taken to using the term, sustainable transportation, instead of the previous, widely-used "alternative transportation" term to avoid sidelining their interest from the mainstream.

Many efficient, practical, and inexpensive sustainable transportation technologies already exist, meaning activism, policy work, and planning research is most often more crucial to developing sustainable transportation than technology development.

edit  watch  Selected service learning Projects gallery (refresh)

ENGR 215 Introduction to Design projects – Spring 2012: Friends of the Dunes: The Spring 2012 semester of Engineering 215 worked with Friends of the Dunes to design and build projects that support the Humboldt Coastal Nature Center at 220 Stamps Lane, Manila, CA.

Spring 2012 ENGR 215 Intro to Design Projects - Humboldt Coastal Nature Center
Solar Powered Trail Lighting System
Solar trail lighting  
Carbon Footprint Wheel
Educational carbon footprint display  
Living Green Roof
Green roof educational model  
Acoustic Panels
Acoustic panels utilizing re-purposed materials  
Living Green Display
Interactive display promoting environmental consciousness  
Rapid Composter
Rapid composting system  
The Stretchbarrow
Hybrid stretcher/wheelbarrow  
The Sandy Cove
Amphitheater constructed of urbanite  
Pump Powered Dune Movement Simulator
Interactive sand dune model  
Beachgrass Baler
Tool to bale beach grass  
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Selected categories

Topics
Energy

Solar
Water
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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. Earth Hour!
  2. Ribes divaricatum
  3. My Personal Review on this Semester
  4. MY REFLECTION ABOUT THE SUBJECT - EMPOWERMENT TECHNOLOGY
  5. Learning Experience as a Senior High in E tech
  6. Semester Life
  7. E-Tech: An overall
  8. A roller coaster ride
  9. BEING A SENIOR HIGHSCHOOL STUDENT
  10. Empowerment Technology by Jannah Pacana

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

Under construction

Create a new page:

  1. Nutrition
  2. Bacteria‏‎
  3. Human development
  4. Environmental science
  5. Open sustainability
  6. New Urbanism‏‎
  7. Building management systems
  8. Science‏‎
  9. Microgeneration
  10. Environmental design

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

Or create a page on the topic of your choice.

Newest files - images and documents that can be added to pages more

Note: Appropedia's newest files may not yet comply with our policies.

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Please help Appropedia grow!

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!

Questions? Comments? Visit the Village Pump. Also discuss Appropedia and related topics over on the Permies permaculture forums.

Find us on Facebook, Pinterest, and Twitter. Check our Flickr images and YouTube videos.

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