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Local production: The case for and against
A version of this interview was originally published in the first edition of…
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The best appropriate technology DIY plans
In off-grid communities where lights at night could improve grades and…
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A solar water sterilizer takes aim at rural…
This solar water sterilizer treats 10 liters of water in two…
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Call to action: Help fix a well at…
A well that supplies water for a Guatemalan girls’ home and…
Webinar
Tea Bag Water Filter
About this Webinar: A combination of antimicrobial nanofibers and activated carbon…
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Bone char filters block arsenic at the faucet
In our ongoing coverage of the US Environmental Protection Agency’s P3…
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E4C’s YouTube project: Essential playlists for appropriate design
Take a look at our playlists, in the right-hand margin of…
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Water filters: First Ghana, then the world
With enough clay, rice husks, plastic buckets, time and training, Susan…