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Welcome to Appropedia

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

Explore solutions for sustainability, appropriate technology, poverty reduction, and permaculture. You are encouraged to add to and edit Appropedia with your original research on these subjects. To learn more about appropriate technology, we invite you to check Portal:Appropriate technology.

Browse our categories or all 8,848 articles. Contributors have made 421,521 edits and uploaded 34,993 files.

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Announcements — more

To catch the rain cover.png Rainwater catchment around the world.
Get a paperback on Amazon or free digitally at http://www.tocatchtherain.org.


After being hung up overnight in a breezy location, shirts worn once (even in the tropics!) smell quite fresh enough to wear again.
Washing and drying clothes. Washing and drying clothing are common activities that can use a lot of energy - if we aren't careful. But there are a lot of things, most importantly washing in cold water and line drying, which are not only greener, but will make your clothes last longer (as long as you don't leave them outside too long, to fade).

Why does it matter? - Energy usage: We need to use less energy with efficient washers and cold water (unless there is abundant solar hot water), and use renewable energy where possible.

Water usage: The more water we use, the harder it is to process the waste water, and the more strain we place on the water supply.

Water pollution: Minimize the use of detergent. Consider these words about the chemicals you use. Once people appreciate that they make other things dirty when they make their clothes clean, they think differently about what they're doing. Read more...
Conventional showers minimize thermal comfort, maximize energy use and water consumption, and exacerbating moisture problems... A solution?
Conventional showers minimize thermal comfort, maximize energy use and water consumption, and exacerbating moisture problems... A solution? Read more or check our book


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Community action news

France1.jpg

Jul 27 France to ban heated terraces in cafes and bars [1]

Jul 15 Climate news 2020: Climate change: Siberian heatwave 'clear evidence' of warming [2]

Jul 15 California news: The SEED grows: after 2 years of a basic income experiment, the residents of Stockton, Cal., are on the uplift [3]

Jul 3 Environment quality news: Sonic doom: how noise pollution kills thousands each year [4]

Jun 28 Towards sustainable economies UK: Just 6% of UK public 'want a return to pre-pandemic economy' [5]

Read More...



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Thomas Edison
I’d put my money on the Sun and Solar Energy, what a source of Power! I hope we don’t have to wait until oil and coal run out, before we tackle that.

Thomas EdisonW


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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