Welcome to Appropedia

We develop knowledge to build rich, sustainable lives (read our vision and mission).

Explore 8,559 resources and solutions for sustainability, appropriate technology, poverty alleviation, permaculture and more!

Climate change • Culture and community • Design • Energy • Environment • Environment rehabilitation • Food and agriculture • Fundamental human needs • Health and safety • International development • Knowledge • Transport • Water

Advanced search Browse categories

Announcements

Catching rainwater around the world
Get a paperback from Amazon or free digitally at tocatchtherain.org

• Oct 15 Urban sustainability news: It looks like the pandemic is helping us to move our business into the streets - and killing the urban car along the way [1]
• Sep 30 Climate news: Has the world started to take climate change fight seriously? [2]
• Sep 25 California news: Global warming driving California wildfire trends say scientists [3]
• Sep 22 China news: Climate change: China aims for 'carbon neutrality by 2060' [4]
• Sep 21 Climate news: World's richest 1% cause double CO2 emissions of poorest 50%, says Oxfam [5]

Read more...

Selected page

From Arcata Marsh overview

Aerial view of the marsh.

The Arcata Wastewater Treatment Plant is responsible for the treatment of the sewage for the city of Arcata. The Arcata Marsh and Wildlife Sanctuary is a part of the system that cleans our waste in preparation to be released back into the water cycle. The system as a whole is the wastewater treatment plant (WWTP). The Arcata Wastewater Treatment Plant personnel maintain 11 wastewater pump stations as well as all of the equipment, motors, and pumps associated with the plant. They also are responsible for the operation and maintenance, of the 55 acres of oxidation ponds and 154 acres of treatment and enhancement marshes. The Arcata Marsh and Wildlife Sanctuary is a constructed wetland and is part of the Arcata Wastewater Treatment Plant. This use of constructed wetlands is what separates the Arcata Wastewater Treatment Plant from other Wastewater Treatment Plants. The first treatment plant was built in 1946 and discharged unchlorinated primary treated wastewater into the bay.

Selected gallery

From E215 Introduction to Design projects § Spring 2017: Zane Middle School

The Spring 2017 semester of ENGR215 Introduction to Design worked with Zane Middle School to design and build sustainable and educational infrastructure and apparatuses that supports K-8 STEAM education at their Eureka, CA location.

• 

  Compost
  A two bin compost system for the garden.

• 

  LED pendulum wave machine
  An inspiring crystal LED pendulum to teach about waves.

• 

  Sundial
  An sundial in the concrete entrance that relies on students to tell time.

• 

  Standing fidget desk
  A fidget desk solution to the modern fidget craze and science.

• 

  Shake table
  An earthquake simulator machine that is powered by a drill.

• 

  Portable green screen
  A large portable green screen for the video editing class.

• 

  Camera obscura
  An antique inspired modern camera obscura.

• 

  Movable instrument storage
  A robust solution to inadequate violin and viola storage.

• 

  tessellating concrete path
  Concrete path beautification of the main entrance using a tessellating falcon stamp.

• 

  Mulch Makeover
  A new landscape design, which incorporates plants that are drought tolerant, evergreen, and low maintenance.

Selected quote

James Hansen

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 Hansen

More quotes...

Help us grow!

Appropedia is created by people like you! Feel free to contribute to Appropedia your original research, projects, current works, observations and wisdom. Improve articles by clicking "edit" on top of any page or section. Our philosophy is: BE BOLD and contribute!

Questions? Comments? Visit the Village pump or the Permies permaculture forums.