What’s the Best Solar Food Dryer?

...y. Food can spoil before enough moisture is removed. That’s why you should build a solar food dryer. Brace Direct Food Dryer. Image: FAO. There are two basic designs for solar food dryers: direct and indirect. Direct dryers are just a box with a piece of glass on the top. Indirect dryers use a box to collect the heat of the sun and then, thanks to the fact that hot air rises, take that heat up into an enclosed box that contains the food you want t...

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Nomadic Furniture

...e about that thoughtstyling). The subtitle of the book sums it up, “how to build and where to buy lightweight furniture that folds, inflates, knocks down, stacks, or is disposable and can be recycled.” You can see more of their work thanks to a recent retrospective of their work in Vienna. My favorite project in the book is the series of “knock-down living cubes” made from 2 x Douglas fir and plywood. There’s one for kids, one for work, another fo...

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Induced Demand

...car and you end up driving more miles since you don’t pay as much for gas. Build a four lane highway instead of a two lane one and so many more people end up driving that you end up with worse gridlock. I’d never thought of induced demand when it comes to greywater, but it’s a good point. Did I plant more fruit trees because I had a greywater system? Has this caused more water consumption in our current drought? Honestly, I think the answer is yes...

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We are all gardeners

...re as our ally. If we bring nature back into our cities and suburbs, if we build soil and plant trees and encourage biodiversity, we can do amazing things, like sequester carbon and regulate temperature and protect our lands from flooding. We can do all these things and support other species at the same time. And on another level, we need nature to remain healthy and sane. It’s not just about food or water or air quality, it’s about spirit. We are...

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Is it safe to use cinder blocks or red bricks in stoves and ovens?

...val Common Sense, does a good job of refuting this notion in a blog post, “Build a brick rocket stove: Is it safe to use concrete blocks?” The short answer is that those concrete blocks are not going to explode. But if you want something permanent you should use fire bricks and fire clay as mortar so it won’t crack. Related to this issue is our use of regular bricks in the hearth of our adobe oven. Most sources suggest using fire bricks or kiln br...

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