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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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The Kitjito Windpump
Windpumps. Windpower technology dates back many centuries. There are historical claims that wind machines which harness the power of the wind date back to the time of the ancient Egyptians. In Europe the first windmills were seen much later, probably having been introduced by the English on their return from the crusades in the middle east or possibly transferred to Southern Europe by the Muslims after their conquest of the Iberian Peninsula.

The first half of the 20th saw further development, particularly a move toward propeller type wind machines for electricity production. By the 1920's 6 million windpumps were being used in the USA alone and their manufacture and use had become commonplace on every continent.But the glory of the windpump was short-lived. With the advent of cheap fossil fuels in the 1950's and 1960's and the development of pumping technology the windpump became almost obsolete in the USA.

There are manufacturers in several developing countries now producing windpumps. The uptake of wind machines for water pumping, however, has been generally very slow even though the technology is well suited to the demand of many regions of Africa, Asia and Latin America.

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CCAT pedal powered innovations

Years of pedal powered innovations from CCAT, all in one place.

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Community action news

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Nov 13 Italy: Venice floods: Climate change behind highest tide in 50 years, says mayor [1]

Nov 11 Australia news: Is climate change to blame for Australia's bushfires? [2]

Nov 8 Australia news: Australia bushfires: 'Unprecedented' fires turn skies orange [3]

Nov 7 Ardern says New Zealand on 'right side of history' as MPs pass zero-carbon bill [4]

Nov 5 Climate news 2019: Climate change: ‘Clear and unequivocal’ emergency, say scientists [5]

Read More...


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Hansen at the Our Opportunity student summit in March 2009
A global tipping point will be reached in 10 years [ 2016 ] if levels of greenhouse gases like methane and CO2 are not reduced. Global warming at this point becomes unstoppable.

James HansenW
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Estuaries and coastal waters are among the most productive ecosystems on Earth.
Water is vital for all known forms of life. Covering 71% of the Earth's surface, it is found mostly in oceans and other large water bodies. 1.6% of the total mass of the Earth's water is below ground in aquifers and 0.001% is in the air as vapor, clouds, and precipitation (rain, snow and sleet).

The Earth's water moves constantly through a cycle of evaporation and transpiration (evapotranspiration), precipitation, and runoff, usually reaching the sea. Over land, evaporation and transpiration contribute to the precipitation over land - thus deforestation and other changes to land can have wide and long-lasting effects through their impact on the water cycle.

Some observers estimate that by 2025 more than half of the world population will be vulnerable to a lack of water. Appropriate water supply and water purification technologies can help.

Related portal: Greywater
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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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