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


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Project leads: Mark Ambrosino, Lauren Lamet, and Daniel Colman.
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Photovoltaic vaccine refrigeration at Centro De Salud. This photovoltaic system was designed to power a DC Vaccine Refrigerator at the hospital Centro De Salud in Parras, Mexico. Centro De Salud had a list of items that needed to be purchased at their hospital. Among these was a new vaccine refrigerator. After learning of this, the project group members set out to design a PV system for the hospital that could fulfill this need.

PV systems are well suited for vaccine refrigeration for a few reasons. PV arrays are becoming an increasingly popular alternative to gas generators for supplying energy to off-grid vaccine refrigeration because of their ability to create reliable energy that requires little system maintenance. LINK PDF According to the World Health Organization, PV refrigeration systems are much more efficient at maintaining internal temperatures in refrigerators than gas generators. This creates for an overall greater reliability of the refrigerator system. In the case of Centro De Salud, having a PV powered vaccine refrigerator could prevent vaccine spoilage due to grid power outages, which can be very costly.

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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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Oct 15 Visions: The Sustainable Future Town of Your Imagination [1]

Oct 13 Don’t frack with us: meet the victorious activist ‘Nanas’ of Lancashire [2]

Oct 10 Community involvement UK news: Becoming Unstuck With Relational Activism [3]

Oct 3 Climate news 2019: What does Greta Thunberg's call for equity mean? [4]

Sep 19 Climate news 2019: For the sake of life on Earth, we must put a limit on wealth, George Monbiot [5]

Read More...


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Portrait of Benjamin Franklin
He that is rich need not live sparingly, and he that can live sparingly need not be rich.

Benjamin FranklinW
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Hot topics / In the news


Planted cattails at Millcreek greywater
Greywater, sometimes also spelled as graywater, grey water or gray water, is all of the effluent water from a household, such as water discharged from lavatories (bathroom sinks), bathtubs, showers, clothes washers, and laundry trays. Greywater is not wastewater from a sink used for food preparation, or water closet (toilet) wastewater.

The water leaving our homes carries nutrients and value. It may also contain pathogens, and/or harsh chemicals and care should be taken with it. However, it is not a great risk compared to blackwater (sewage).

Redirecting the water we use for tasks such as showering allows us to reclaim some of that value to grow plants and recharge the water table. It may be necessary to choose our soaps and detergents more carefully, if we use the greywater for watering and fertilizing plants.

Main portal: Water
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E215 Introduction to Design projects: This gallery lists some of the projects done by Engr215 Introduction to Design taught at Humboldt State University. All semesters taught by Lonny Grafman, unless noted otherwise.

Spring 2012: Friends of the Dunes

Design and build educational displays, technologies and infrastructure for the Humboldt Coastal Nature Center  
Fall 2011: Flock House

Design and build sustainable technologies for mobile art pods interacting throughout NYC  
Spring 2011: Locally Delicious

Design and build appropriate technology projects for children that promote healthy, local eating  
Fall 2010: HBCSL Somoa Hostel

Design and build eco-projects to support a hostel being designed at the Samoa Cookhouse  
Spring 2010: RCEA

Design and build energy education boxes, housed at Redwood Coast Energy Authority to build, for classrooms in Humboldt County  
Spring 2010: World Shelters

Design, prototype and improve structures by leveraging the resources of Haiti and World Shelters  
Fall 2009: CCAT and Network for a Healthy California

Design and build appropriate technology projects for CCAT and Network for a Healthy CA  
Spring 2009: WaterPod

Design and build sustainable technologies to educate and support artists living sustainably on a barge in NYC  
Fall 2008: Full Belly Project

Design and prototype adaptions to the Universal Nut Sheller  
Spring 2008: Discovery Museum

Design and build educational flume inserts for the Redwood Discovery Museum  
Fall 2007: HBCSL

Designing and prototype model hostel cottages for the proposed Humboldt Bay Eco Hostel  
Spring 2007: RCEA

Design and build energy efficiency displays for the Redwood Coast Energy Authority (Co-taught with Professor Eileen Cashman)  
Fall 2006: CCAT

Design and prototype educational, appropriate technology, infrastructure models  
Fall 2005: Interactive Energy Efficiency Displays

Design and build educational energy displays for the Redwood Coast Energy Authority  
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