Is Lead Poisoning a Risk in Urban Gardens?

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Those of you who have followed our blog over the years know that our yard is contaminated with lead. This is, most likely, due to some combination of lead paint residue and car exhaust. For years we’ve grown vegetables in raised beds because of this issue.

But if the results of a University of Washington study on lead and urban agriculture are to be believed, we might not need to be as concerned. The researchers note that most vegetables don’t take up lead and that improving soil with compost greatly reduces the bioavailability of lead.

You can read a summary of the results of this research paper here.

Thanks to Joanne Poyourow of Environmental Change Makers for tipping me off to this research.

075 Visionary Architect Glen Howard Small

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Flying House from the Biomorphic Biosphere

Our guest this week is architect Glen Small. If you’re not familiar with his work I’d really recommend taking a look at some of his amazing buildings, drawings and models while you listen to this podcast–you can see them on his blog which is Small at Large and at glenhowardsmallarchitect.com. Glen was one of the founders of the architecture school SCI-Arc and is probably best known for his visionary Biomorphic Biosphere Megastructure, which we talk about during the podcast as well many other projects and buildings such as the Downtown Troposphere and the Green Machine.

Green Machine 1977-1980

Green Machine 1977-1980

He was also the subject of a documentary by his daughter Lucia Small, My Father the Genius. During the conversation we discuss the state of “green” architecture, Small’s large proposals as well as his buildings in Nicaragua and much more.

If you want to leave a question for the Root Simple Podcast please call (213) 537-2591 or send an email to rootsimple@gmail.com. You can subscribe to our podcast in the iTunes store and on Stitcher. The theme music is by Dr. Frankenstein. A downloadable version of this podcast is here.

Take a class with architect Glen Small

Image source: Small at Large

Visionary architect Glen Small doesn’t need a computer. He can take a bunch of scrap paper, cardboard and some glue and make amazing models. He’s also of the last generation of architects who know their way with pen, paper and watercolors.

Small was one of the early proponents of a style of architecture informed by natural forms and environmental concerns. He was one of the founding members of the architectural school SCI-Arc. And I’m hoping to have him on the podcast soon.

If you’re in the Southern California area you have a great opportunity to take an inexpensive, hands-on architectural modeling class with him at Copper Mountain College in Joshua Tree, CA.

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How to polish your silver effortlessly–with Science!

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Tarnished flatware waiting for a bath

Here at Root Simple, we live high on the hog. We eat off of silver spoons every day. It’s true. I inherited a set of silver flatwear and utensils from my mom’s side of the family, and instead of saving them for Christmas and Thanksgiving, I use them every day.

This is fairly revolutionary, as I come from a family of Savers. Recently, I unearthed a set of six snowy white damask dinner napkins from the family treasury, painstakingly ironed into perfect squares, centered on a cloth covered board and wrapped in a lace cloth and tied with a ribbon. They’re so perfect it’s clear they’ve never been used.

These may have been a part of my grandmother’s wedding trousseau, or maybe even my great-grandmother’s. But whoever gathered them together so carefully, they never thought any dinner party in their entire life was special enough to use them.

Well, this attitude ends with me. Erik and I don’t have kids, and we’ve hit middle age, so I’m burning the bridges behind us. Everything must be used. No more squirreling and saving. Which brings me back to the silver.

We use silver every day, but it gets tarnished. It’s used too frequently to get that  heavy black tarnishing which afflicts unused silver pieces. Instead, our forks and knives and spoons turn a sort of purplish grey. It’s not real pretty.

Hand polishing the lot of it would only be fun if I could do it in the butler’s pantry in Downton Abbey while gossiping about the gentry upstairs. So I looked up that “foil trick” that was half-lodged in the recesses of my mind, and I discovered its a real thing, and it works like a charm.

Tarnishing happens when the silver combines with sulfur in the air and forms silver sulfate. The black stuff, the tarnish, is silver sulfate. When you clean silver by hand, using silver polish, you are physically rubbing off the tarnish–and some of the silver. When you do this trick with the foil, you are actually reversing the chemical reaction–turning the silver sulfide back into silver. In other words, you become a wizard. And I ask you, would you rather be a wizard or a scullery maid?

The caveat: This process strips away tarnish very effectively–too much so, say connoisseurs of fine silver and the gentle patina of age. It will strip all of the tarnish out of all the patterns and nooks and crannies on your silver objects, rendering the surface somewhat flat and new looking in its universal brightness. Just so you know.

The incredibly easy process:

My primary reference for this was this lecture demonstration from the chemistry department of The University of Massachusetts. There are many versions of this trick on the Interwebs, but some of them are unnecessarily complex or persnickety. You do not need vinegar! You do not need batteries!

This linked information is straightforward, and being from a chem department rather than some random blogger (like myself), it’s reliable. It also explains the science if you’re interested–seems like it’s an oxidation and reduction process? As an art major, I’m just waving my hands around at this point.

You’ll need

• A non-metal container to hold the silver to be cleaned. For flatwear, a glass or enamel baking dish works well. You want to be able to spread everything out.  (I hear you can also use an aluminum baking pan, like one of those disposable roasting pans. In this case you can skip the foil.)

• Aluminum foil

• Baking soda (sodium carbonate)

• Salt

• Hot water

1.Line your dish or other container with foil.

2. Arrange your silver in the container.  All the pieces should touch foil and be completely submerged. Don’t crowd them too much.

2. Stir a small amount of salt and soda into hot water. How much salt and soda? How much hot water? I don’t think exact quantities matter a whole lot except that you should use equal amounts of salt and soda, and don’t dilute it to a crazy extent.  Let’s say use a tablespoon each of salt and soda per quart or two of hot water. UMass used rather less, but this is what worked for me.

3. Pour the hot soda/salt water into the container and watch the magic!

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A minute or two into the bath–the color change comes quickly

You should see some changes right away. My not-so-tarnished flatwear only took a couple of minutes total.  A more heavily tarnished piece will take longer, maybe up to 10 minutes or so.

4. Remove the clean pieces of silver from the water and rinse with clean water and dry with a cloth. You could opt to further bring out the shine with some polish or a polishing cloth.

The solution is non-toxic, so you don’t have to worry about wearing gloves, and you can pour it down the sink without guilt.

Just FYI, I was able to do three consecutive batches of flatwear in the same water bath, although I could see some weakening of the effect by batch #3.

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Flatwear in the rinsing bowl, looking much better!