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Hog Factories are Evil Part 1232

Byoliveridley

This rather interesting study tracks the movement and evolution of antibiotic resistance from hog cesspools (lagoons) caused by factory production (hog farming) of pig meat. You see, in order to pack that many hogs together and not cause them to keel over and die from disease, they have to be pumped full of antibiotics. Guess where the antibiotics end up? In their “refuse”.

As always, I leave you with The Meatrix if you want to know more about factory farming.

Antibiotic Resistance Tracked From Hog Farms to Groundwater

The routine use of antibiotics in swine production can have unintended consequences, with antibiotic resistance genes sometimes leaking from waste lagoons into groundwater, according to new research from the University of Illinois.

Researchers report that some genes found in hog waste lagoons are transferred, “like batons,” from one bacterial species to another. This migration across species and into new environments sometimes dilutes, and sometimes amplifies, genes conferring antibiotic resistance, they say.

The new report, in the August issue of “Applied and Environmental Microbiology,” tracks the passage of tetracycline resistance genes from hog waste lagoons into groundwater wells at two Illinois swine facilities.

Tetracycline is widely used in swine production. It is injected into the animals to treat or prevent disease, and is often used as an additive in hog feed to boost the animals’ growth.

Its near-continuous use in some hog farms promotes the evolution of tetracycline-resistant strains in the animals’ digestive tracts and manure.

This is the first study to take a broad sample of tetracycline resistance genes in a landscape dominated by hog farming, said principal investigator R.I. Mackie, a professor in the University of Illinois-Champaign department of animal sciences and an affiliate of the Institute for Genomic Biology.

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Canada's Greatest Scientist

Byoliveridley

Is apparently someone called Rex Murphy who writes political and social columns for Canada’s premier newspaper, who has done what thousands of scientists all over the world could not do: Solve the issue of global warming by pointing out that Toronto is having a very cool July.

So where’s that global cooling alert? – The Globe and Mail

Now, however, Toronto in July is cool and I am waiting in vain for the lips of just one forecaster to ask how can this be. Waiting just once to hear the familiar phrase “global warming” in a sentence that even hints that the theory behind it is so much more tentative than we have been urged with such fervour to believe.

It was so easy, the solution was in front of us all this time, why did no other scientist not use the obvious connecting equation: Weather (in one’s hometown in July) = Climate?? Damn, there goes my Nobel. Sometimes, it is that easy!

Next week on the Globe and Mail: Isee Flaturtha stands on top of a hill, looks all around, can see nothing but flat land for miles and miles, publishes an opinion piece proving that the Earth is flat and excoriating the so called “Round Earth” scientists.

I am glad that Canada’s best newspaper is open to such great scientific writing. Clearly, Canada’s future is bright.

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My kid loves statistics and 15 minute cities

Byoliveridley
My kid’s transport goals for the year

We have started this simple diary where my 7 yo tracks each of her trips and categorizes them as car or not car. I find the analog simplicity of this approach to be appealing and I’ll be helping her keep this updated. I am also resisting temptation to add more data to this survey for myself (her project, not mine!) My movement goals are the same as hers, walk and bike as much as practicable leaving driving only for the “it’s too far or I don’t have even 10 minutes to spare or I have to carry something that won’t fit on my cargo bike, or it’s not safe to bike with a kid”.

Our life for the most part now fits the 15 minute city model, the concept that “Everyone living in a city should have access to essential urban services within a 15 minute walk or bike.”. Other than my once a week commute to work, almost everything we do is in that 15 minute walk/bike window and while our all age and abilities bike network is still work in progress, the trend is clear (thanks Dave Thompson Victoria City Councilor for the graphic from the CRD transportation survey)

Pesticide makes rat grandsons unattractive.

Byoliveridley

Yes, strained headline!

A Toxic Hand-Me-Down — Balter 2007 (327): 1 — ScienceNOW

Environmental contamination can cause cancer and birth defects. Of particular concern are a group of toxic chemicals called endocrine-disrupters, which interfere with reproductive hormones and may cause sterility. A new study, published online this week in the Proceedings of the National Academy of Sciences, suggests that these chemicals can change reproductive behavior as well, and that these behavioral changes can be passed on from parents to offspring. If correct, these changes could alter the course of evolution by giving natural selection new targets to act on.

In 2005, a team led by reproductive biologist Michael Skinner of Washington State University in Pullman reported in Science that the fungicide vinclozolin, an endocrine-disrupter used to spray vineyards and other crops, causes fertility defects in the male offspring of female rats treated with the chemical. These defects are, in turn, passed down to the males of subsequent generations. The toxin did not appear to be altering gene sequences; instead, Skinner and colleagues found, vinclozolin was somehow causing other chemical groups to latch onto certain genes, changing their expression (Science, 3 June 2005, p. 1391). The phenomenon is known as epigenetic inheritance. Last year, Skinner’s group identified 15 epigenetically altered DNA sequences in the sperm of the vinclozolin-treated rats

More signs of intergenerational effects of low levels of endocrine disruptors. I had blogged recently about Bisphenol A having intergenerational effects (where exposure to a chemical agent causes consequences for offspring and off off spring, etc).

It’s still early, but remember Children of Men (good movie, see it).

Wow, Conventional Milk makes Twins!

Byoliveridley

44m.jpgHoly tentacular twins, Batman! This is crazy news, the first study linking the incidence of twins with environmental factors. The culprit is growth hormone fed to cows to increase milk production. According to this Wikipedia article, a third of all dairy cattle use Monsanto’s rBGH (or rBST) brand Posilac®, so obviously, use is widespread.

FEED – July 2006 (from the Union of Concerned Scientists)

1. Engineered hormone in milk may be linked to twinning. A recent study found that women who consumed dairy products were five times more likely to give birth to twins than vegan women. The study suggested that the use of engineered bovine growth hormone/bovine somatotropin (BGH/BST) to boost milk production in dairy cows may be related to the higher level of twinning. BGH is known to increase twinning in dairy cows. In addition, the rate of human twinning is twice as high in the United States, where BGH is used, as in Britain, where BGH is banned. BGH affects twinning rate by increasing insulin-like growth factor (IGF), a protein produced in the milk of both animals and humans, that promotes ovulation and may help early-stage embryos survive. A separate study found that levels of IGF were 13 percent lower in vegan women than in women who consumed dairy products. Read a press release about the study, which was published in The Journal of Reproductive Medicine.

If true, no woman should ever drink “conventional” milk (non-organic, non rGBH free, etc). Twins are fun, I love my twin nieces very much, but they are much more difficult to carry and deliver, and there are more complications.

Scary, but I suspect this is the tip of the iceberg as far as environmental effects on childbirth are concerned.

Carrboro Screening of "After the Peak"

Byoliveridley

I happened to watch an interesting short film called After the Peak about peak oil, the concept (not that revolutionary unless you ask Messrs  Exxon-Mobil, Shell and Dick Cheney!) that oil production will start declining after a certain peak production event. The docudrama made by local film maker James McQuaid was part of a public meeting on the local (Orange County, NC) responses to the coming energy crisis. Interesting conceptually, it was shown as a 30 minute local newscast, with the usual cast of characters, the too handsome eye candy anchor and his female sidekick, the young and breathless “street reporter”, the gray haired expert, and the uber-energetic sports guy! The newscast is set a year into the future when the price of gas is $10/gallon. The documentary of interviews with various community members about the effects of the price of gas on their business/life. In the 30 minutes, he touched upon food, school buses, sports, NASCAR, the poor, commutes, etc. It was an interesting effort, if a little over the top! The fake interviews with the racing track owner who’s closing his track down, the UNC athletic director who has to cancel all his long distance events, the manager of the local food store who threatens food scarcity.

But is $10 a gallon really a big deal?

gas-prices.png

This simple chart shows income adjusted dollar per gallon gas prices (gas prices from 2006, income from 2004, but it should not change too much.)

Let’s avoid the low income outliers and just compare the U.S and Germany. In April 2006, the U.S was paying $2.95 a gallon and Germany, $8.06 per gallon (ref). If you further adjust that with the per capita income of the two countries, $41,300 for the U.S versus $30,500 for Germany (ref), you will find that the price of gas in Germany is well above $10 a gallon already, they seem to be doing just fine! Maybe they just drive less. The US uses 381 million gallons of gas per day (that’s about 1.2 gallons per day per person). I agree that this comparison is a little flawed because the bulk of the German price is due to taxes, which go back to the government and are presumably used for various good deeds. Also, if the price of gas went up due to shortages, the price differential between Germany and the US would presumably stay constant (unless the Germans lowered taxes). My point is that many countries cope with high gas prices quite well, they just don’t make the same choices the Americans make, 1 acre lots, large SUVs, super long commutes, etc. There are a lot of efficiencies to be had here. The graph below shows the income adjusted gasoline price for a few countries (easy data was available!)

My take: we need to swiftly move away from gasoline by a) Disincentivizing the use of gasoline in transportation b) Incentivizing the use of electricity for transportation. Electricity can be produced more efficiently, and pollution at the source can be controlled more effectively. A combination of a drastic increase in solar and wind power, coupled with aggressive development in battery technology should more than solve our problem without much recourse to biofuels (that great boondongle).