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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 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 365,800 edits and uploaded 29,272 files.
Browse our categories or all 7,807 articles.

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To catch the rain cover.png Be part of our Kickstarter for To Catch the Rain.


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You can have a Green Christmas.
You can have a Green Christmas. Often the best time of year for catching up with family and friends, it's also the biggest time of spending - on presents, food, alcohol, parties and holidays. Unfortunately, all of our spending and consumption results in significant environmental damage and carbon pollution. However, you don't have to be a scrooge to reduce your carbon footprint at Christmas. Here are tips for a more sustainable festive season.

Buy a service, not a product: To reduce embodied carbon pollution and water consumption, think about buying someone a service - say a voucher for a massage, rather than a massaging appliance. Vouchers for other services, (such as gardening or housecleaning) or film and theatre tickets are also good. Beware gifts that will increase the recipient's motor travel.

Buy gift vouchers: Gift vouchers are a good thing for the environment. People use them to get exactly what they want. And they can use its value for a purchase in the store at any time after christmas. Make sure the validity is at least 6 months or a year, so that recipient will not forget to use it before it expires. (more tips follow)

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Home biogas system (Philippine BioDigesters)

"It can be built as a : Do-It-Yourself (DIY) project where expert masonry skills are not required" and "by using common and inexpensive materials available anywhere."

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Community action news

Tramway de barcelone 1.jpg

Jan 12 City of Barcelona Kicks Out Microsoft in Favor of Linux and Open Source [1]

Jan 11 Climate action UK: Theresa May, charging us for plastic won't make up for those awful Tory environmental policies you're keeping quiet about [2]

Jan 10 In Vancouver, Shipping Containers are the New Tool Libraries [3]

Jan 9 5 community sharing projects in Israel and the West Bank [4]

Jan 3 Spain: In 2018, Madrid Is the City to Watch for Environmental Progress [5]

Read More...


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Architect Eliel Saarinen
Always design a thing by considering it in its next larger context – a chair in a room, a room in a house, a house in an environment, an environment in a city plan.

Eliel SaarinenW
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Hot topics / In the news

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Blog

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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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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Energy

Solar
Water
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