Beef and dairy drive 41% of biodiversity damage linked to global farmland (oxfordmartin.ox.ac.uk)

86 points by robtherobber an hour ago

93 comments:

by imjonse 10 minutes ago

Even on a site like HN, where rational and logical thinking is held in high esteem, and where few could be suspected of climate change denialism, a factual statement such as this one from the article:

"On average, animal-sourced foods are associated with eight times more carbon loss and 14 times more biodiversity loss per calorie than plant-sourced foods."

is very likely to be countered by listing personal preferences, anecdata, concern for vegans' health or mockery of that lifestyle choice, and generally nitpicking.

Honest admissions like 'I am part of the problem and will maybe try doing something about it' are very rare.

by soco 7 minutes ago

Indeed, that's the same answer when topics like public surveillance or dependency-inducing media are debated. It's difficult to criticize a problem, when you're a part of the problem, respectively paid to be the problem.

by christophilus a few seconds ago

We have around 27 million cattle (in the US) today. There were something like 30-50 million bison in the US before we almost eradicated them. Were the bison equally bad? Or is the problem that we’re feeding these ruminants unnatural diets?

Incidentally, I’d love to see the Great Plains return to huge roaming ruminant populations, and find a way to build our meat industry around that.

by 8by3 an hour ago

Not to mention that beef/dairy production is a primary source of methane which is 80x more potent than Co2, but constantly under reported due to its shorter half life. Yes in the long run that matters, but its all the more reason that we should reduce animal agriculture right away as the payback is much faster than limiting Co2.

by DarkNova6 11 minutes ago

I never understood this argument. With Oil & Gas you release green house gases that have been sealed away back into the air.

For methane produced by farming all components remain in a cycle. Everything released by animals eventually finds its way back to plants, which get eaten, which become exhaust of animals, etc.

This sounds to me more like a spin by big oil to finger point at another industry.

by enquirewithin 43 minutes ago

What percentage of anthropogenic methane emissions can be attributed to cow farts?

I would hazard a guess that the incidental methane emissions from one gas extraction field would astronomically dwarf the emissions from cow farts.

by pcrh 9 minutes ago

It isn't the "cow farts" that produce most methane, but rather the anaerobic processing of cow dung emanating from feed lots, dairy operations, etc.

Grass-fed beef cattle whose dung is "recycled" in a more natural way in the fields produce the same emissions as would wild ruminants such as antelope, bison, etc.

The biodiversity problem in the above refers mostly to new land clearances intended for farming, including for feedstock. This is minor in N. America and Europe, mostly as the clearances were done decades or over a century ago.

by krige 40 minutes ago

https://en.wikipedia.org/wiki/Methane_emissions

fossil fuels contribute 33% farm animals contribute 30%

Not astronomically; marginally. Anyone who's been around herbivore farm animals will tell you they fart. A lot.

Then again, farm plants are a further 18%.

by enquirewithin 2 minutes ago

I didn’t say animal agriculture, I said “cow farts”. The animal agriculture figure listed on that Wikipedia page includes all ruminant livestock (mainly cattle, sheep, and goats).

Also, from that Wikipedia article:

There is accumulating research and data showing that oil and gas industry methane emissions – or from fossil fuel extraction, distribution and use – are much larger than thought.[35][36][37][38][39]

Still, my “astronomically dwarfs” looks to be overstating it by a wide margin.

by modo_mario 25 minutes ago

Those fossil fuels emit what otherwise wouldn't be available in the carbon cycle.

A cow that's fed on gras and farts emits nothing that that gras didn't pick up and contributes virtually nothing to climate change in the long term.

by lotsofpulp 16 minutes ago

I imagine the fertilizers used for the grass to support the quantity and quality of the cows’ output require quite a bit of fossil fuels.

Otherwise, I wonder if non fertilizer supported grass could support sufficient cows to satiate demand (which has not even peaked yet).

by Llamamoe 29 minutes ago

> Then again, farm plants are a further 18%.

Yeah, but they also provide 80% of the world's calories to animals' 20%

by tempfile 35 minutes ago

> farm plants are a further 18%

Apparently mainly rice growing. I knew paddy fields were bad, but I didn't know they were that bad. Per calorie I am sure it is more like a tenth that of ruminants, perhaps less, but still worth replacing with other carbohydrates.

by Llamamoe 29 minutes ago

All the more so since rice is relatively poor in nutrients.

by dev_l1x_be 30 minutes ago

With corn based feeding.

by throwawayffffas 24 minutes ago

I would argue animal emissions do not matter at all, methane survives about a decade in the atmosphere. Eventually breaking down to co2, co2 that was already in the atmosphere to begin with. Fossil fuel emissions are the ones that matter.

by aqme28 22 minutes ago

Not following your logic. A decade is a long time for such a powerful greenhouse gas.

by firebot 5 minutes ago

It's mainly burps. They chew their cud.

Cows produce around 50 kg CH4 per head per year. There's around 1.5 billion cattle. That's around 75 teragrams (million metric tons).

Humans release about 410 teragrams altogether. About 40 percent is agricultural. And another 40 percent is from fossils, namely natural gas.

The top 100 natural gas leaks release over 20 teragrams of methane a year. That's just the leaks. That's 400,000,000 cattle worth of methane just pissed into the wind.

by shiandow 39 minutes ago

You would be wrong, they are about equal in size, both accounting for about a third of the anthropogenic emissions.

by modo_mario 27 minutes ago

>Yes in the long run that matters, but its all the more reason that we should reduce animal agriculture right away as the payback is much faster than limiting Co2.

The long run is the thing that really matters. A faster payback only serves to cover the impact of those that want to keep pumping up oil and gas in the meantime(also to make synthetic fertiliser) for a few decades. It shifts focus from that on cow farts. As if the rotting plant matter and wild animal life that could replace it didn't emit any methane.

by whyage 29 minutes ago

Plenty of people (including me) are vegan, healthy, and happy. As omnivores above the poverty line, we can all make conscious and conscientious choices about what we eat. Going vegan is one of the most effective ways to combat global warming (if you're not in a position to donate large sums of money toward climate change research or mitigation).

by Buxato 7 minutes ago

Take a look to a soybean plantation for example, biodiversity totally destroyed. Also, are you doing a physical main work?

by IsTom 3 minutes ago

The point is that you need multiple plantations like this to make enough feed for the cows to make equivalent calories/proteins.

by firebot 22 minutes ago

Give it a couple decades. Most 'vegans' stop being vegan well before that. I'll let you Google why they do.

by pastage 10 minutes ago

I am not vegan, will never be, but I have known vegans for more than two decades and they are doing fine. We need to make it easy to make the right choice about food, and one way to do that is to stop making meat meat meat the ONLY cool thing. I am fine with vegans serving me tasty food, they make alternatives easier. If you do not want to be a full time vegan just switch to 3 out 7 days of the week or something like that.

by DarkNova6 9 minutes ago

This is bullshit. The vast majority of CO2 is created by energy production.

The problem is systemic and blaming other people for their lifestyle choices is neither effective nor helpful and just leads to further division. It's exactly this sort of division that helps fossil companies to destroy the planet and keep making money.

by nDRDY a minute ago

Sorry, this is just not correct, even when you ignore the other greenhouse gases and focus on CO2.

https://ourworldindata.org/grapher/global-warming-by-gas-and...

by hackernud3s 10 minutes ago

But someone still has to eat up all those cows before their methane mucks up the environment.

And if you're not willing to do your part, that just means the rest of us have to pull double duty.

by dev_l1x_be 30 minutes ago

Beef & dairy the industrial way drive this. Several studies and decade long experiments show the positive impact of the non-industrial alternatives.

by imjonse 17 minutes ago

And which do the vast majority consume because that is the only one satisfying industrial scale consumption needs?

by testemailfordg2 32 minutes ago

Unfortunately, the priority is increasing efficiency and ROI, rather than sustainability. This leads to centralization and operations at a scale which are not sustainable, without external input or causing damage to existing nature. De-centralization and sustainable practices are the only way forward, as it has been for centuries before us on this earth. Maybe space is the place for these kinds of centralised and intensive practices, like being planned for data centers.

by concinds 12 minutes ago

"Efficiency and ROI" can be applied to financial but also to environmental impact. Producing more with less [land use/fertilizer/water use] is also a form of efficiency, and it's good, but it requires vast capital that mom & pop farms don't have + strong government incentives. De-scaling is only an agrarian nostalgia fantasy, it's incompatible with reaching climate goals.

by avesi 35 minutes ago

There's more nuance here than reducing consumption of beef and dairy. Moving over to regenerative farming practices instead of factory farming will also improve the situation.

by soupspaces 14 minutes ago

How about regenerative economics? I hate it.

by sudo_cowsay an hour ago

But it's also not like we can just stop eating steak and milk.

by lentil_soup 30 minutes ago

you can, but you can also just reduce it, you can eat say half the meat/milk. Eat more vegetables and grains. Not only massively reduces the impact but pretty good for your body too

by lukan an hour ago

Yes we can ... but most of us (including me) don't want to. (At least not completely)

by DarkNova6 8 minutes ago

"Most of us" is a pretty bold claim.

by lukan 4 minutes ago

Well, those are the numbers I found, that matched my intuition:

"Beef: roughly 70–80% of people eat it at least occasionally

Milk and dairy: roughly 85–90%"

by enquirewithin 36 minutes ago

With the ever growing popularity and success of the ketogenic diet, it becomes progressively more evident that a plant based diet is massively suboptimal for a not insignificant fraction of people.

by williamdclt 33 minutes ago

Our ecosystem dying is also pretty suboptimal.

by Llamamoe 25 minutes ago

This has nothing to do with plant and everything to do with rampant prevalence of gut dysbiosis and harmful gut bacteria feeding on otherwise healthy fibers and carbs, as well as processed carbohydrate and sugar overconsumption plus insulin resistance driven by sedentary lifestyles, inflammation, etc.

Ketogenic diet is a band aid to both, not a solution, and plants are not the cause of either problem, either.

by choo-t 30 minutes ago

You can do a keto diet without meat.

by tonyhart7 an hour ago

we literally cant, human body its not designed to not eat meat

by mschild 35 minutes ago

Not all meat is steak. Reducing and/or exchanging beef for other meat sources can at scale already make a massive difference.

Chicken, for example, produces 10% of CO2 per kg of meat compared to beef.

by tonyhart7 26 minutes ago

if we going for efficiency, rabbit meat is no 1 choice

by lukan 37 minutes ago

Not quite true, but cooking becomes quite a bigger challenge.

But mainly, beef and meat is not the same, cattle needs way more ressources than chicken for example, or well, insects.

by JoeyJoJoJr 39 minutes ago

But the human hand was designed to hold a banana.

by shiandow 36 minutes ago

There are other sources of meat.

Also dairy is not a meat.

by Aefiam 6 minutes ago

It literally is designed to survive without meat, meat used to be a luxury that was only eaten on special occasions for most people in history, we only eat so much nowadays because it became so cheap

by choo-t 37 minutes ago

There is no health reason to eat meat. You can get your B12 elsewhere.

by hackernud3s 28 minutes ago

You can get it from supplements. That's about it though.

by ben_w 12 minutes ago

Supplements if you're vegan, there are vegetarian sources.

Just looked up the Wikipedia page to check on vegan, and… looks like all the animal and plant "sources" actually ingest the stuff from elsewhere?

  Since only bacteria and some archea possess the genes and enzymes necessary to synthesize vitamin B12, plant and algae sources all obtain the vitamin secondarily from symbiosis with various species of bacteria,[5] or in the case of fermented plant foods, from bacterial fermentation.[86]
- https://en.wikipedia.org/wiki/Vitamin_B12
by IsTom 9 minutes ago

TBH fortified yeast flakes are a pretty good spice.

by tempfile 32 minutes ago

Ridiculous comment. The human body is not designed at all, and is very much capable of surviving without milk and meat. It's not even very hard!

by lukan 19 minutes ago

Surviving and prospering aren't the same things, though. And you do need to mind a lot of substitutes you now need, if you just let go of meat.

by ben_w 8 minutes ago

It's not *that* hard to prosper with even a vegan diet in the modern world, I know several who do fine.

Hardest part is knowing implicit animal ingredients you might not otherwise guess, which almost tripped me up when I visited the US and (as a vegetarian*) almost bought some yogurt before reading the ingredients list and finding to my surprise that it contained gelatine.

* it's mainly the cheese; I've substituted out other uses of milk.

by lotsofpulp 43 minutes ago

And yet the most populous country in the world has an enormous contingent of people who do not eat meat (on the order of hundreds of millions).

by firebot 25 minutes ago

Sure and like half of them have anemia.

by tonyhart7 36 minutes ago

who ?? if you talking about indian, they still eat meat (around 6 - 12 pound every year)

by ben_w 3 minutes ago

Mean != distribution.

The mean human has approximately one ovary, one testicle. A few hundred million Indians refusing all meat is compatible with the others not doing that.

by lotsofpulp 22 minutes ago

“Indian” does not seem to be a sufficiently cohesive group to qualify referring to them as “they” (in this matter).

https://www.pewresearch.org/religion/2021/06/29/religion-and...

by not-kinsale-joe 33 minutes ago

Genuine question, can you explain why we can't?

by techterrier an hour ago

Theres a billion or so Indians that might suggest otherwise

by bitlad an hour ago

India is among the largest beef exporter in the world.

by savolai 41 minutes ago

Does this make the vegetarians not exist?

by lotsofpulp an hour ago

Milk products are very prominent in many Indians’ diets. I wouldn’t be surprised if India’s milk consumption per capita is the highest in the world, given a large proportion of Indians avoid meat, so they might source more protein/fat from milk products.

If it’s not, it’s probably just poverty holding back consumption.

Edit: upon second reading, I realize techterrier was probably refuting only the steak part of sudo_cowsay’s comment

by shrubby 43 minutes ago

It's also poverty holding back millionaire consumption.

There was a research, which I can't be arsed to google with mobile, that compared western vegan diet and Indian omnivore and, yup you guessed it, the western version was less costly in terms of future proof.

But as with the zillionaires the human predicament depends on weather we muster the courage to limit ourselves or die to the extinction that's already manifesting itself in forms like forest fires, droughts and crop losses.

by tempfile 34 minutes ago

I am not vegan, but I found dropping beef and lamb to be literally the easiest modification to my life possible. Dropping dairy is much harder, but as I am now discovering still incredibly easy to reduce.

by hackernud3s 22 minutes ago

Dropping lamb? Something tells me that won't be a problem for most of the people in this thread lol.

by karakarakarakar an hour ago

You can eat bugs

by throwthrowuknow 29 minutes ago

We need a new caveat cliche for these headlines like how people love to reply “in mice” to health research. For environmental research it’s almost always “in the 3rd world”

by chickenbig 40 minutes ago

Does this mean we should be advocating for more intensive cattle rearing? Stockyards and special breeds may not be the worst way to meet demand and reduce environmental impact (measured by CO2/methane emissions as well as biodiversity loss, for instance).

by pcrh 5 minutes ago

Stockyards are the worst offenders. This is due to how the dung is processed, which releases a lot of methane. Grass-fed cattle have much lower net emissions of greenhouse gasses.

by choo-t 32 minutes ago

It's far easier do avoid producing so much meat. A vegetarian diet is perfectly healthy.

by tempfile 39 minutes ago

I despair. Is it that hard for us to imagine eating less meat?

by pjmlp an hour ago

Thing is, will be anything left after we destroy the planet with war, data centers, rare earth minerals mines, nuclear and battery waste?

by plaguna an hour ago

Sadly, this being Hacker News, it won't catch much attention and will be quickly flagged by people who have too much karma.

But I think we are making progress, slowly, sadly too slowly, with the current summer we are having in Europe, of the impact of our past actions in the weather. And make no mistake, eating so much meat and drinking so much milk, is a huge impact we are inflicting on our planet.

Please do not comment with "I do X" or "In our house, we avoid doing Y" - it is not about you and me, it is about society. I am convinced, you are convinced, we need everyone to be convinced.

by throwawayffffas 14 minutes ago

Okay lets get this straight, animals do not contribute to global warming. The co2 they emit has been taken from the atmosphere from plants.

Methane breaks down to Co2 in the atmosphere on average in 9.6 years.

Animal rearing does not permanently affect the climate.

Increasing stock sizes does increase the methane level equilibrium but there are mitigations to this, there are additives to feed that can reduce methane emissions to 1%. Last I checked a few years ago, there were pilot programs to determine effects on animal welfare and product quality.

The problem we should be focusing on is fossil fuels.

by hdgvhicv 39 minutes ago

Everyone apart from a few stragglers agree the climate is changing. Most people agree the world won’t change its behaviour on its own to stop that.

So we can thus incentivise change (things like renewables being far cheaper than fossil fuel) globally, and adapt to reality.

There are a vocal minority whining about how we need to stop eating beef or milk annd stop using energy and there are those who make beef and milk more sustainable and make generating energy sustainable. I have time for the latter. The former can go hand out with the coal rollers.

by jcattle 35 minutes ago

How do you make beef and milk more sustainable? I'm honestly wondering. To me it seems similar to saying: we can make coal power plants more efficient. Equivalent to more "efficient" (however you want to define that) forms of animal husbandry.

It doesn't change the fact that you're still burning coal, while you could be putting up solar.

by paweladamczuk 11 minutes ago

FWIW, no matter the issue, this kind of tone makes me close up for any rational arguments. I wish I could look past it, but I just can't.

by pastage a few seconds ago

It's probably not the tone, because that tone is not the only one heard. You only choose to hear that tone and close up.

I hold some fringe ideas, e.g. helmets are bad. So I have lots of experience with handling discussion where people close up for any rational argument. Because I am just wrong by definition. That really lets you explore how people react to ideas they do not support.

by hackernud3s 33 minutes ago

Beef specifically. If everybody switched to pork, chicken and fish that would mitigate most of this and it's a much more realistic ask.

by Yizahi 42 minutes ago

It will be flagged because of the manipulative headline.

by simianwords 18 minutes ago

I would much rather have Europe install ACs instead. Stopping meat, not installing ACs, degrowth all look like masochistic ways to show that we are repenting.

by rimworld 16 minutes ago

cow farts lol

by pvaldes an hour ago

Another way of saying the same would be: Agriculture causes almost 60% of the biodiversity damage linked to global farmland.

Yep, is the miracle of literature. An hectare of cattle allows more biodiversity than the same hectare of lettuce.

by facecalm 36 minutes ago

The miracle would be to read the article which states the biodiversity damage is 14 times higher per calorie than plant-sourced foods. Which means you could reduce the 40% to 2-3% if you would replace it totally.

by Buxato 5 minutes ago

And per protein gram? Taking into account bio equivalence and bioavailability between different kinds of protein source.

by tovej 39 minutes ago

You think cows are the only animals that require food production from farms?

by nobodywillobsrv an hour ago

Seems causally false.

by tempfile 29 minutes ago

What does that mean?

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