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Continue reading →: Compost Heater How-To
Chris Towerton, in Australia, shows us an experimental compost heater he build to provide heat for at least two hours per day for up to 9 weeks. He’s using his system to heat one room in his house with a hot water radiator. Happily, he talks in detail about what…
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Continue reading →: More on the Pot-in-Pot Refrigerator
The Rojases at Green Power Science, in Florida, give us more info on the pot-in-pot refrigerator. They highlight the need to be aware of your surrounding humidity levels. If the humidity is above 75%, they note, the zeer pots won’t work because they require evaporation to work and that’s a…
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Continue reading →: Small Scale Ethanol Production Demo
Jim Yager and Jim Baker, retired engineers in Alabama demonstrate their fuel alcohol still. To cut their costs they’ve used mostly PVC piping (traditionally copper would have been used throughout). They estimate that their PVC design costs about $150 to build.
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Continue reading →: How to convert a washing machine into a water powered generator
buddhanz1, in New Zealand, shows us how to convert a washing machine into a water powered generator. It looks as if he may be using the municipal water supply to power his generator. At any rate, he gets enough power to live off-grid (powers his fridge, PC, lights, appliances —…
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Continue reading →: How to Make Sugar Beet Molasses
Brian shows us how to make molasses sugar out of sugar beets.
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Continue reading →: The Dakota Fire Hole/Pit
The Dakota Fire hole/pit offers a highly efficient way to create an outdoor camp fire. Advantages: Burns very hot, the fire is well-contained, uses much less firewood than a conventional above ground fire, is less smoky, is easier to conceal (if that’s a concern) as and after you’ve used it…
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Continue reading →: Loveable Loo Humanure Toilet
This is a great video because the Loveable Loo folks have gone the “open source” route in showing you how a sawdust toilet is built and giving you the option to be inspired by what they’ve done or to buy a Loveable Loo from them. This is a simple sawdust…
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Continue reading →: Urban Greenhouse Vegetables and Fish in Milwaukee
Will Allen walks us through the Growing Power farm operation in Milwaukee, Wisconsin. They use vertical growing techniques to maximize yields and growing space for vegetables and mushrooms and they also produce tilapia (in heated tanks) and yellow perch (a lake fish that can no longer be fished for in…