Failed Experiment: Bermuda Buttercup or Sour Grass (Oxalis pes-caprae) as Dye

...t porch. The day turned out to be cloudy and cool, so I don’t believe that solar energy aided my cause. Then, I ended up leaving the pot out all night long. In the morning some of the Oxalis had turned olive, other parts were still bright green. So I decided it was not done and put it on the stove, bringing it to a bare simmer as described for the direct heat method. In the meanwhile, I rose above my lazy half-assery and scoured my fabric–two whit...

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Airing Our Dirty Laundry

...ng hot sun of Los Angeles, it makes perfect sense to use our region’s free solar power. So why air dry? Let’s do the math. Assuming our (gas powered) dryer uses an average of .22 therms of natural gas per load at our gas company Sempra Energy’s August rate of 59 cents per therm, by using our clothes line we achieve the admittedly not too impressive savings of 17 cents per load. If we had an electric dryer we figure that the cost would be about 44...

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Journal of the New Alchemists

“Six-Pack” Backyard Solar Greenhouse, 1975. Image: Journal of the New Alchemy. After reading an article by Paul Ehrlich, “Eco-Catastrophe!,” Nancy Todd turned to her husband John and said, “We must do something.” The year was 1969 and the Todds along with Bill McLarney went on to found the New Alchemy Institute. History repeats itself. What the New Alchemists did, in response to the 1970s era energy crisis and political instability, sounds a lot...

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Mistakes we have made . . .

...l rooms, and before scum and slime clogged up the pump. While the pump was solar powered, the profligate use of water was not the best example to set here in draught prone Los Angeles. After a few months we gave up, filled it in with soil and now strawberries grow there happily. We hear that Materials and Applications, a neighborhood landscape architecture firm that runs an amazing outdoor gallery, has stopped designing water features unless they...

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Lights Made from Soda Bottles

...Via Make Blog, a clever homebrew solar light made from soda bottles. I’m a bit skeptical about how you could make these watertight, but for an outbuilding or patio roof they might make for a nice low cost alternative to solar tubes or skylights....

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