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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 encouraged 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 374,817 edits and uploaded 30,061 files.
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Sarah the hardest worker who is always chuggin' away.
CCAT yurt rainwater catchment. The long history of rainwater collection, can be traced (in recorded history) as far back as ancient times some 3,000 years ago (850 BC) if not even farther. The need for water is a basic human essential for maintaining life, without it, no civilization could have prospered. Rainwater collection in ancient Constantinople is one of the last megalithic structures of its kind.

The CCAT Rainwater Catchment Group consists of: Sean Colley, Matt de Young, Jessica Radtkey, Sarah Shimizu, and Tiesha Whittaker. Our project for ENGR 114 was to build a rainwater catchment system around the yurt at CCAT on campus at Humboldt State University. The purpose of the rainwater catchment system is to capture and store rainwater in a large storage drum for use to water plants on the CCAT grounds. Water is a resource that is always present around us but not always in an immediately useful form. Therefore, it is necessary that we use innovative and appropriate techniques to capture and transform the water that we have into a useful form of water for our needs.

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Parabolic basket and tin can solar cooker

Creating a solar cooker out of local invasive species and waste materials in order to pasteurize water and be an alternative to the use of fossil fuels for cooking food.

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Community action news

Girls on a Bicycle.JPG
Apr 24 Cycling news 2018: What Cities Need to Understand About Bikeshare Now [1]

Apr 23 1000 Electric Buses To Spearhead Paris Goal Of 100% Zero Emissions Public Transportation [2]

Apr 17 Florida: Miami's sharing potential [3]

Apr 17 Denmark: How do we utilize local knowledge so that others can benefit from it? A guide from the Danish Island of Samsø [4]

Apr 16 Reduce, reuse, repair and recycle: Recycling hope for plastic-hungry enzyme [5]

Read More...


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The only known photograph of Chief Seattle, taken 1864
This we know, the earth does not belong to man, man belongs to the earth. All things are connected like the blood that unites us. We did not weave the web of life, we are merely a strand in it. Whatever we do to the web, we do to ourselves.

Chief SeattleW
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Blog

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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ENGR 215 Introduction to Design projects – Fall 2010: HBCSL Somoa Hostel: The Fall 2010 semester of Engineering 215 worked with Humboldt Bay Center for Sustainable Living to design and build projects that support a proposed eco-hostel in Humboldt County.

Fall 2010 ENGR 215 Intro to Design Projects - HBCSL
Thermosyphon Solar Shower System
An outdoor shower that utilizes solar energy to heat the water  
Samoa Hostel Truth Tank
Provides greywater treatment system for a satellite solar shower  
Samoa Hostel Wattimus Prime
A metering scheme that monitors the amount of energy used by the visitors  
Can You Feel The Heatloss?
An education display about convection and heat loss  
Samoa Hostel Natural Paints
A natural paint display to educate visitors of the Samoa Hostel  
Pain in the Axle
A bicycle-powered electrical generator that powers a television and DVD player  
Samoa Hostel Windbelt
An array of wind belts that can charge a cell phone  
The Mechanical Munchy-Maker
A mechanical bicycle that generates energy to power a kitchen appliance  
Samoa Hostel Insulation Station
Educates visitors about the effectiveness insulation types and their relative costs  
Samoa Hostel greywater island
Models, designs, and educates guests and implementers of hostel size greywater treatment  
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Solar
Water
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