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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 398,910 edits and uploaded 32,207 files.
Browse our categories or all 8,438 articles.

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Announcements — more

Emilio-thumb.png Emilio Velis has been appointed the new Executive Director of the Appropedia Foundation! Read more...


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Sustain to the music!  :-)
Environmental songs. Below is a list of Songs with and Environmental Theme - something to listen to while you are working on Appropedia:

Blues: Global Warming Blues

Country: Jimmy Buffet - Wheather with YOU · Jimmy Buffet- Volcano · Jimmy Buffet - A salty Piece of LAnd

Folk Rock: Big Yellow Taxi by Joni Mitchell · Politik by Coldplay · Hagen - Mother Nature · Dave Matthews Band - Too Much · Antarctica by Joanne Rand · Fire and Rain by James Taylor · Waiting on the World to Change by John Mayer · Hearts And Hands by Stele Ely · On The Clothesline by Stele Ely

Funk: Jamiroquai - Emergency on Planet Earth

Heavy metal: Biotech is Godzilla by Sepultura · Steel Prophet- Environmental Revolt · Sepultura - Old Earth

Hip hop: New World Water by Mos Def · Atmosphere · Michael Franti & Spearhead - Is It Love Enough? · Ozomatli- Coming War · Earth Song by Michael Jackson · Ice MC - Look After Nature

Ja: Spirit- "Fresh Garbage"

Indie: Lay Me on the Water by Gavin DeGraw, from the indie album "Gavin Live" · Nature Anthem

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AEF greywater

Recreating a failing greywater marsh at the Arcata Educational Farm.

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Community action news

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Sep 16 UK Climate news: Faster pace of climate change is 'scary', former chief scientist says [1]

Sep 14 A Macedonian bee-farmer - “half the honey for them, half for us” - shows us what “de-growth” might feel like [2]

Sep 12 Trees, woodland and forest: World 'losing battle against deforestation' [3]

Sep 3 Climate news 2019: How much destruction is needed for us to take climate change seriously? [4]

Aug 27 Climate news 2019: Embracing climate activism [5]

Read More...


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Suzuki in 2009
We don't know what details of a truly sustainable future are going to be like, but we need options, we need people experimenting in all kinds of ways and permaculturists are one of the critical gangs that are doing that.

David Suzuki W
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Hot topics / In the news


The Sun photographed by the Atmospheric Imaging Assembly (AIA 304) of NASA's Solar Dynamics Observatory (SDO).
Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar radiation, along with secondary solar-powered resources such as wind and wave power, hydroelectricity and biomass, account for most of the available renewable energy on earth. Only a minuscule fraction of the available solar energy is used.

Solar powered electrical generation relies on heat engines and photovoltaics. Solar energy's uses are limited only by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, solar hot water, solar cooking, and high temperature process heat for industrial purposes.To harvest the solar energy, the most common way is to use solar panels.

Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.

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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.

Chris's ENGR305 Solar Food Dehydrator

A hybrid, solar food dehydrator  
Compressed earth brick press

An exploration of compressed earth bricks  
Deidre's vertical vegetable garden

Solar powered vertical vegetable garden  
Devan's vertical axis wind turbine

Experimental Vertical Axis Wind Turbine  
Engr305 peanut sheller project

Peanut sheller made from clay and newspaper  
Engr305 pulser pump

A working model of a Pulser pump  
Engr 305 solar learning station

Instructional Solar Learning Station  
ENGR305 windbelt

Testing new materials for prototype windbelts  
Ethanol from organic sugar beets versus refined cane sugar

Determining the cost inputs and energy outputs of small scale ethanol production  
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Topics
Energy

Solar
Water
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  7. Esteban Rojas Acuna 3D Printing ENGR242
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