Genetically-Engineered Organism Secretes Diesel

Image © Joule Unlimited, Inc.

It sounds like science fiction but according to an article by Jay Lindsay of the Associated Press, A Massachusetts company has a patent on a genetically modified organism that secretes diesel fuel from water, sun and CO2 inputs. Here’s an excerpt:
Joule claims, for instance, that its cyanobacterium can produce 15,000 gallons of diesel fuel per acre annually, over four times more than the most efficient algal process for making fuel. And they say they can do it at $30 a barrel.

Normally I am opposed to genetically modified plants but this would appear to be a contained situation. Would it be a good thing for the planet if we had unlimited diesel fuel? I would guess that the CO2 would be net neutral whatever escapes the exhaust pipe would have had to have gone into the fuel initially – right?

Mass. company making diesel with sun, water, CO2

I’m curious what other people think about this.

Bees: Shown to the Children

Mrs. Homegrown here:

Homegrown Neighbor lent us this beautiful little book. The author is Ellison Hawks (what a name!) and dates to 1912. This book is part of a series of books for kids on various natural history topics, all titled the same way (i.e. X: Shown to the Children). I’d love to see the whole collection.

Every time I read an old children’s book, I’m struck by the sophistication of the language and themes presented, and wonder why this has been lost, and then try not to despair for civilization. Take this passage about intruders to the hive, from the chapter called Workers in the City (in the book, the hive is conceptualized as a bee city). It’s poetic and morbid and violent fascinating–all things I would have loved as a child:

Sometimes a mouse or a snail enters the hive, and then indeed there is great excitement. Imagine a great elephant-like creature, thirty or forty feet high, with a tail thirty feet long, to come walking into one of our cities, and you will have some idea what it seems like to the bees when a mouse is foolish enough to poke its head in the hive! But the bees are not frightened; the guards are promptly called out, and the poor mouse is soon put to death by hundreds of stings. Having made sure that the intruder is quite dead, the bees leave his body to the scavengers, who are confronted with the problem of disposing of it. If it were left it would cause disease and pestilence throughout the city, and it is too big and heavy for them to move. It is true that they might bite it into tiny pieces and thus carry it outside the hive, but this would take too much of the bees’ valuable time. A better plan is thought of, and the body is soon covered over with a thin coating of wax. It is thus embalmed in a beautiful white tomb, which is made perfectly air tight. If the tomb is near to the door, and interferes with the passing in and out of the workers, tunnels are cut through it. Sometimes when we look inside a hive, we may see two or three of these little mounts of was, and we may be sure that each one is the grave of some intruder who had no right to be there.

Granted, I believe foreign bodies in the hive, such as mouse corpses, are actually covered with propolis, not wax, but I’m not going to hold it against the authors. First, I’m not sure if I’m right or not, and at any rate, the idea is the same, and very well described.

There’s so much good to say about this book. It’s illustrated with early photos, line drawings, and pretty full color illustrations. In somewhat more than 100 pages it covers bee anatomy, behavior, the process of collecting nectar, hive society, beekeeping basics and even includes a chapter on “The Ancients” which addresses the apparently long-lasting ancient supposition that bees are born from the rotting bodies of oxen (?!?). I’m wondering if that was more of a symbolic conceit, because surely the ancients were no dummies and could tell the difference between blowflies and bees. But it makes for colorful reading, and again, as a child, I would have been entranced. Even if I couldn’t understand half the words.

Turns out this book is hard to find in the US because it’s an UK title. There’s only one Amazon listing, and it’s $23, and a couple more expensive at Alibris, but lots of UK listings for less. We may have to begin direct negotiations with Homegrown Neighbor for this copy.

UPDATE: A reader wrote in to tell us the whole book is available online, for free, at the Hathi Trust Digital Library. So if you want you can jump over there and page through it. I’d checked Google books, and it’s not there. I’m glad to learn of Hathi. They’ve got three other books in the series, too, btw.

Build a Worm Tower

Host: Leonnie Shanahan. More info:

Mrs. Homegrown here:

One of our commenters on the compost debate, Nick H., offered up a link to a great video about worm towers, so we thought we’d share. A worm tower is a wide (at least 50cm dia.) pipe sunk halfway into the ground, with access holes on the lower half to allow the worms to come and go. Food and bedding is dropped in the top, which is kept capped.

We happen to have worm & compost expert Nancy Klehm staying with us this weekend, and she explained to us that this particular technology makes a lot of sense for hot, dry climates (note the video comes from Australia), because it’s sunken and it allows the worms to distribute themselves in the cool soil during the day. Conversely, I can imagine this wouldn’t be such a great thing in rainy climates as it could easily flood.

Nancy told us the worm holes clog up, so you do have to remove the pipe for cleaning fairly regularly, and perhaps take that opportunity to reposition it. I imagine that’s when the casting harvest would occur, and harvest promises to be a pretty messy process. 

The video speaks of using PVC pipe for the tower. PVC is cheap and easy to work with, but it’s pretty well established that it leaches toxins as it degrades, so you might want to seek out pipe in other materials. As an aside, we used to use PVC pipe in our self-irrigating pots, still still have PVC in some of them, but are phasing it out in favor of metal or bamboo pipe. Yet we still have PVC lines as part of our irrigation system. This is something you have to weigh and decide for yourself. 

Once Erik dragged home a section of ceramic sewer pipe he found in the street. It lingered in our yard for years, and was finally returned to the street. Now we’re singing the pack rat’s lament (See! See what happens when you throw things away!), because it would have been perfect for this.

On first glance I’d characterize this system as a novel idea, one which is worm-friendly, and best suited to hot, dry climates. It looks convenient to set up and use, but probably not the best system to use if you’re primarily interested in the castings.

If we can find another length of sewer pipe we’ll try it out and report back.

A Taste of Honey – Story from the BBC

Gentle readers,

Mrs. Homegrown here. When we renamed our blog Root Simple we were making a commitment to build a better blog. We don’t have the change all mapped out yet–we’re letting it evolve organically (how else?) but one thing we’ve known for a long time, and that is that we wanted to partner with Eric Thomason and Julia Posey from Ramshackle Solid. We’ve long admired their aesthetics, the grace with which they live simply, and the way they’re raising their boys: free and bold.

Don’t worry, Ramshackle Solid fans: they will continue to document their adventures on that blog, just as always. Here at Root Simple they’re going to liven up our game, dropping by with opinions, ideas and information that you probably wouldn’t get from me and Erik, making Root Simple a more interesting place. At the same time, Erik and I will continue to blog as we always have.

So give them a big welcome! And now, on with Eric’s first post, about one of my favorite subjects, the healing power of honey:

photo credit: edibleoffice via creative commons lisc.
The other night, Wednesday Feb 9th to be exact, while suffering a bout of sleeplessness, I had the great good fortune to hear this very interesting 27 min. audio story: A Taste of Honey (BBC)
It’s a very informative news piece starting with the history of mankind’s honey consumption and cultivation, discussing small scale vs. large commercial apiaries, colony collapse and ending with new breakthrough medicinal application of honey for aliments ranging from types of cancer to drug resistant staff infections.
One type of honey in particular, manuka honey, has very effective antimicrobial properties due to an additional compound found only in some wild manuka (leptospermum scoparium) in New Zealand.
Here’s a statement from the Summer Glow Apiaries website:

In laboratory studies honey with high UMF activity (over UMF10) has been found to be effective against a wide range of bacteria including the very resistant helicobacter pylori (this bacteria causes most stomach ulcers), the wound-infecting bacteria staphylococcus aureus and escherichia coli, streptococcus pyogenes (causes sore throats).

If you don’t have the time to listen or prefer to read, much of the health benefits being explored are discussed here in this BBC print piece from 2004: Harnessing Honey’s Healing Power