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in sustainability, appropriate technology and poverty reduction.

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Windmillprint-crop.jpg As part of a 3-D printing class, graduate students will be designing printable open-source appropriate technology for sustainable development. If you want a technology designed to be 3-D printed, post your ideas here. Chosen designs will be made and open-sourced for the global community. Deadline Nov. 13, 2014


Yeast Cakes from Hops
Yeasts for Baking. Generally when one mentions yeast, aromatic loaves of fresh homemade light bread come to mind. And so they should. Aside from acting as a leavening agent in bakery products, yeast is also the ingredient responsible for the tantalizing aroma that arises during baking.

Though probably today the most commonly known and used are store-bought packages of dried yeast, there are several other different kinds. The recipes that follow show two examples of different ways to make yeast--dry yeast cakes made from hops and an everlasting yeast "starter"--and also how the yeasts are used in making bread.

The dry yeast cakes are made in part by boiling the blossoms of the hop vine. These flowers contain a fragrant yellowish oil called lupulin. The use of this oil as a preservative in beer and as a narcotic drug originated in Germany before Charlemagne. Since then its use has become widespread and the vine cultivated in other nations, including America.

Hydroponic Vertical Garden at Sembradores Urbanos

Hydroponic Vertical Garden at Sembradores Urbanos. a non profit in Mexico City dedicated to transforming urban areas into green, productive, and sustainable spaces.

Buckminster Fuller
All of humanity now has the option to "make it" successfully and sustainably, by virtue of our having minds, discovering principles and being able to employ these principles to do more with less.

A windmill is used to power a water pump which fills a swimming pool.
Appropriate technology (AT) is technology that is designed with special consideration to the context of its use - including environmental, ethical, cultural, social, political, and economical aspects of the community it is intended for. With these goals in mind, AT proponents claim their methods require fewer resources, are easier to maintain, and have less of an impact on the environment compared to techniques from mainstream technology, which they contend is wasteful and environmentally polluting.

The term is usually used to describe simple technologies proponents consider suitable for use in developing nations or less developed rural areas of industrialized nations. This form of "appropriate technology" usually prefers labor-intensive solutions over capital-intensive ones, although labor-saving devices are also used where this does not mean high capital or maintenance cost. In practice, appropriate technology is often something described as using the simplest level of technology that can effectively achieve the intended purpose in a particular location. In industrialized nations, the term appropriate technology takes a different meaning, often referring to engineering that takes special consideration of its social and environmental ramifications.

edit  watch  Selected service learning Projects gallery (refresh)

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.

Papasan Chair Solar Cooker

A solar cooker and chair when not in use  
Parabolic basket and tin can solar cooker

Solar cooker out of local invasive species and waste materials  
Plastering CCAT Earthbag Terrace

A sturdy, natural plaster covering to the EarthBag gardening terrace being built in front of CCAT  
Rocket stove biomass charcoal

Use of biomass waste charcoal briquettes for rocket stove  
Rowan's portable pedal power generator

A pedal power generator  
Small greenhouse rainwater catchment

A rainwater catchment system for a greenhouse  
Solar Charged Lawnmower

An electric lawnmower that utilizes solar power as an energy source  
Solar heating box

A passive solar heating box  
Sunbrella

An umbrella in the rain, a solar cooker in the Sun  
Sunny Brae Middle School Garden

A garden at Sunny Brae Middle School  
Sunny Brae rainwater catchment system

A residential rainwater catchment system  

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