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Mohandas Karamchand Gandhi
You must be the change you wish to see in the world.

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Arcata Educational Farm
Organic farming is the form of agriculture that relies on crop rotation, compost, biological pest control, mechanical cultivation, and other techniques using natural processes, to maintain soil productivity and control pests. Organic farming excludes or strictly limits the use of synthetic fertilizers, pesticides, and livestock feed additives. Genetically modified organisms are excluded, and organic standards in Britain and Australia exclude engineered nanoparticles.

"Organic agriculture is a production system that sustains the health of soils, ecosystems and people. It relies on ecological processes, biodiversity and cycles adapted to local conditions, rather than the use of inputs with adverse effects. Organic agriculture combines tradition, innovation and science to benefit the shared environment and promote fair relationships and a good quality of life for all involved..." -- International Federation of Organic Agriculture Movements

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Photovoltaic vaccine refrigeration at Centro De Salud

Building a solar powered (photovoltaic) vaccine refrigerator with a community hospital in Northern Mexico. Now the sun helps keep the vaccines consistently cold.

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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ENGR 215 Introduction to Design projects – Fall 2008: Full Belly Project: The Fall 2008 semester of Engineering 215 worked with the Full Belly Project to adapt their Universal Nut Sheller in the following three manners:

Fall 2008 ENGR 215 Intro to Design Projects - Full Belly Project
The LC sheller
Innovating concrete with sawdust and clay to lower the costs and weight using materials available in some parts of Western Africa  
The Full Bell
Improves the original UNS by reducing the cost and increasing durability of the sheller  
Hot Dang Plastic Encasement
Waste plastic bags available in Haiti cleaned, cut, crocheted and ironed into a hard plastic mold  
Pressed Plastic
A process to thermoform waste plastic bags to form molds for nut shellers using resources available in Haiti  
Nutsy
Shaped like an acorn the Nutsy aims to be a smaller, more portable, and more aesthetically pleasing version of the UNS for marketing within the US  
Multiplicity
Smaller U.S. prototype with exchangeable rotors for different size nuts  
Simple Simon
Smaller US prototype made from wood and aluminum  

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