Dizchu said:
I'm not criticising any economic model here, just stating basic logic. If demand is extremely high then meeting that demand will require a ridiculous amount of resources. Convenience comes at a cost, that's just how it is.
The alternative is to not meet the food demand. An artificially low supply then means exorbitant prices that end up hurting the most vulnerable among us.
Changing nearly anything seems to have a negative elastic effect on something else. It's really hard to enact good policies that are purely good. I just want to make sure we're advocating for something that will actually have a net good rather than a mild good with a significant negative.
Never said it was, but it's the result of these insanely high demands. The root of the environmental concerns is how much people consume and how much it costs to provide the product.
No, it isn't, in times of lower demands we often have even severe waste. Also, before the industrial complex we had a much larger issue with spoilage. It just so happens that in developed Western countries that waste from unnecessary discarding of food is common. But it less developed nation they have a huge problem with spoilage. I'm not sure how you think waste is in any way a product of industry.
We are biologically evolved to want to reproduce, yet asexuals and people who don't want kids exist. Humans have instincts yes, but we also have intellect and self-awareness. An "appeal to tradition" fallacy is an argument that relies on "that's just the way things are". But "the way things are" have changed drastically over the millennia. There are plenty of things that we've evolved with that have proved unnecessary or even detrimental to us, so it's not a good basis for argument.
I'm not sure how describing groups of people with specific traits dismisses the general population's evolutionary traits. Again, this is like telling someone who says they're straight, "Well, you say you're born straight but there are totally people who are asexual or gay". So what? Them being whatever doesn't impact that person being what they are.
If there was a demographic of people who hate the taste of meat, that wouldn't trivialize the average person who is naturally evolved to appreciate meat.
Evolutionary psychology explains why people are the way they are, not why they ought to be the way they are. It's an explanation, not a justification.
Are you saying that you are the authority on what people "ought" to be? I just presented a peer reviewed paper that shows lettuce as having three times the emissions of bacon per calorie. I think you ought to start eating bacon every time you think about a leafy salad
But I've already explained that it's not the suffering at time of death that's the concern, it's the suffering during life. Just like humans "evolved to eat meat", pigs, chickens and cows didn't evolve to live in extremely dense populations. I mean free-range farming is artificial too, but it doesn't come close.
Thanks to biological engineering cows have experienced significant engineering. Are you certain that some of the impacts of our tinkering with their biology and our practices haven't led to a micro-evolution of cows that are evolved to live in dense populations? I'm unsure that a cow who has only ever experienced dense populations isn't entirely adapted to it the same way humans learn to adapt to similar conditions when it's forced upon us.
Could they be a lot happier and freer? Sure, but we don't really know what cows are thinking. We see pictures of this herd animal packed in with a lot of others and we try to inject our own human feelings and wants on them. Personification is cute and all but it isn't always right.
False dichotomy. Tomatoes and broccoli are not the only non-meat foods.
The thing is, there are a LOT of other items that are right around there or higher than chicken. That table didn't compare all food items. The point is that chicken and pork compare equally and sometimes better than staples of the vegetarian community. You seem to accept that point so the contrast of vegetarian to omnivore isn't that stark.
Correction: Some fruits and veggies have a higher carbon footprint than some meats. If you are willing to accept that there's a difference in the impact lamb, beef and chicken have on the environment then you must also accept that there's a difference between tomatoes, apples, oranges, etc.
What do you believe is an acceptable carbon footprint for a calorie and why do you value it at that? There's plenty of studies comparing food types but there's not much saying that the carbon footprint being 6 points higher actually means dick all. I'm not making a point here, I'm asking because I genuinely don't know. Sure, beef is just over double that of a tomato but does that mean it's particularly bad or is that value relatively meaningless, like having a 13 watt fluorescent bulb instead of a 7 watt LED. Sure, 13 watts is just over 7 watts but 13 watt is perfectly acceptable.
What should be our target threshold for carbon footprint per calorie and why?
I posted references to studies that have indicated otherwise so at best this is inconclusive.
No, you posted a reference to a blog. Any studies you have presented are still back in emission per tonnage thinking which is dishonest (of them, not you) at best.
That implies I eat leafy salads on a comparable level. The common misconception is that vegans and vegetarians eat a lot of fruit and vegetables to compensate for the lack of meat (the term "vegetarian" is misleading). Every other food group is ignored.
Ok, so tell me what you eat. On average.
These numbers don't jive with the actual studies produced (this is not a study, this is a blogger interpretation of other data).
Does this not count as an "actual study"?
Ok, here's the thing, I used to have to grade statistical studies on their adherence to statistical norms. So this kind of thing is actually my jam, so to speak.
Here is a summary of the points I'm about to discuss below:
1. The emissions here are actually in emission per weight which we already discussed is misleading and inflated since plants weigh less than meat and contain fewer calories per gram.
2. The study is for the UK but the blogger is applying them to the US which isn't the same demographic.
3. The study is using the blogger's calculator which has old numbers. A study that uses an anti-meat site's calculator is expressing a result bias.
4. The study failed to randomize sample size and acknowledges it as a problem (the cohort of vegetarians had significantly healthier eating habbits than the general population and the friends/family they recruited deviated from the general population of meat eaters).
5. The study failed to account for waste emissions which are much higher in veggies and fruit. This is HUGE and the study acknowledges that this could have significantly reduced the difference between categories and even linked to a 2013 study that indicated veggies would be much higher waste emitters.
6. The study acknowledges that the emission estimates it used have significant issues and are not within the degree of certainty that the paper itself was in.
<spoiler=Click for the breaking apart of the study to make the points in the summary above>The numbers in the blog were the blogger's own extrapolations of the data. Or did you not notice that this is a UK study regarding UK emissions and the blogger was appropriating it for use in the US?
If you were to crack open the study, you'd see that the numbers are also all obtained by
emissions from weight:
"with animal-based products generally having much greater emissions than
plant-based products per unit weight"
So, they found the emission ratio using weight while the diet size itself was supposed to be in a 2,000 calorie diet. I know you probably saw the blogger referencing calories and thought that the emissions were per calorie but they aren't. Once again a study has fallen prey to using weight as the qualifier which does not directly correlate to a calorie diet emission.
Please note that the study itself has one other major issue that I would mark it down on. The sample size is not random. They recruited mostly through vegetarian sites to get all of the samples.
Participants were resident in the UK and recruited through collaborating general
practitioners, by post via vegetarian and vegan societies, and by adverts in vegetarian and
health food magazines. Participants were also asked to recruit friends and relatives
(?snowballing?).
Do you believe that people who frequent vegetarian sites are a valid cross-section of the overall population of the UK? Because there's no way to confirm that. While the sample size is large, failure to sufficiently randomize the sample is a major problem. This would be like a polling center going to republican sites and asking them to recruit democrat family members to respond to the study. Not only would republicans who are passionate enough to frequent such a site not necessarily be a cross-section of all republicans, but the people they recruit may not be a cross section of democrats either.
Also note that the data used in this 2014 study was from 2007. The study released this year that found lettuce to be three times the emissions of bacon is a newly released study and pertains directly to the US.
It's funny that carbonfootprint.com references this study because this study also references carbonfootprint.com as where it got its carbon emission footprint calculator from. The problem is that carbonfootprint.com's value for meat is higher than the sources this study used and the blog acknowledges that the calculator is wrong in the comments of the blog. That's already 3 points of difference. What's more is that it groups goat and beef into the same category but we both know goat is MUCH higher despite being consumed far less. So if they took the average of the two meat type's emission then it skews the average value for beef way out of the ball park. They should not have combined beef and goat meat.
I mean, look at their own discussion (I'm posting things as I run across them):
"The
GHG estimates for food items used in this paper are subject to uncertainty that is not captured in
the confidence intervals shown in this paper"
They even acknowledge that they didn't consider food waste and that vegetable and fruit waste emissions are known to be higher than meat products:
Throughout the analyses presented here we have assumed that GHG emission related to food wastage is
reasonably similar across all food groups, but this may not be the case. Estimates of food wastage
in the UK suggest that wastage of fruit and vegetables is higher than for meat products (Quested
et al. 2013), which could reduce the difference in GHG emissions between the dietary groups.
As I already showed you, there is far more waste from vegetables and fruit.
Also, the study noted that reported food weights in survey format studies of meat frequently include bones and skin which would inflate the estimate of emissions.
Oh man:
"The diets observed in the EPIC-Oxford cohort may not represent current consumption
patterns in the UK." Not only because the data is from the 1990s but because the friends and family of vegetarians don't necessarily represent UK (told you!) and because the people on the sites tended to eat healthier than the general vegetarian population. So they even acknowledged the randomization issue here.
The spoiler above includes direct quotes of the paper's discussion section which is quite damning of their emission numbers' validity. As I stated, the first problem is that they erroneously used emission by weight to get the emission number.
Well that's amusing because I was referring to the Wikipedia article and not the blog post, which I mainly used because the infographics were consistent with the data from the studies. The infographic you posted came from an article that contradicted what you were arguing so I was unaware that you wanted nothing but professional studies.
I cited the infographic and the study it was cited from. Did you read the study itself? It was just a study on emissions of plants and meat so it didn't have all the complexities and failures of the study you presented. It also successfully compared emissions to calories with emissions to weight to explain why one is better than the other.
http://www.cdc.gov/nceh/ehs/Docs/Understanding_CAFOs_NALBOH.pdf This PDF should outline the biggest risks of CAFO farming, among the most worrying are fresh water pollution, antibiotic resistance and methane, as well as the difficulty regulating such intensive operaitons. Predictably the benefits of CAFOs are increased produce and reduced cost. Predictably the benefits of CAFOs are increased produce and reduced cost, not any environmental or health benefits.
The study is talking about local environmental pollution. Not emissions. You and I can agree all day long that CAFOs take a massive dump on their immediate area. Like, literally where fertilizer and animal waste are concerned.
But that's not overall emission. CAFO's perform better on emissions than small scale farms as we discussed where emissions to calories and even weight is concerned.
Also, a CAFO is required to have permits regarding disposal and use of the manure. We do limit what they can do and if they go over then that's a failure to regulate.