Environmental vegetarianism

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All types of meat but especially lamb and beef generate several times more greenhouse gas emissions in their production than plant-based foods. Greenhouse gas emissions per kilogram of food product.svg
All types of meat but especially lamb and beef generate several times more greenhouse gas emissions in their production than plant-based foods.

Environmental vegetarianism is the practice of vegetarianism that is motivated by the desire to create a sustainable diet, which avoids the negative environmental impact of meat production. Livestock as a whole is estimated to be responsible for around 15% of global greenhouse gas emissions. [2] [a] As a result, significant reduction in meat consumption has been advocated by, among others, the Intergovernmental Panel on Climate Change in their 2019 special report [3] and as part of the 2017 World Scientists' Warning to Humanity . [4] [5]

Contents

Other than climate change, the livestock industry is the primary driver behind biodiversity loss and deforestation and is significantly relevant to environmental concerns such as water and land use, pollution, and unsustainability. [6] [7] [8] [9]

Environmental impact of animal products

Box plot showing average GHG emissions for different food types and ranges Clune2016 food lca.svg
Box plot showing average GHG emissions for different food types and ranges

Four-fifths of agricultural emissions arise from the livestock sector. [10]

According to the 2006 Food and Agriculture Organization of the United Nations (FAO) report Livestock's Long Shadow , animal agriculture contributes on a "massive scale" to global warming, air pollution, land degradation, energy use, deforestation, and biodiversity decline. [11] The FAO report estimates that the livestock (including poultry) sector (which provides draft animal power, leather, wool, milk, eggs, fertilizer, pharmaceuticals, etc., in addition to meat) contributes about 18 percent of global GHG emissions expressed as 100-year CO2 equivalents. [b] This estimate was based on life-cycle analysis, including feed production, land use changes, etc., and used GWP (global warming potential) of 23 for methane and 296 for nitrous oxide, to convert emissions of these gases to 100-year CO2 equivalents. The FAO report concluded that "the livestock sector emerges as one of the top two or three most significant contributors to the most serious environmental problems, at every scale from local to global". [11] The report found that livestock's contribution to greenhouse gas emissions was greater than that of the global transportation sector.

A 2009 study by the Worldwatch Institute argued that the FAO's report had underestimated impacts related to methane, land use and respiration, placing livestock at 51% of total global emissions. [12]

According to a 2002 paper:

The industrial agriculture system consumes fossil fuel, water, and topsoil at unsustainable rates. It contributes to numerous forms of environmental degradation, including air and water pollution, soil depletion, diminishing biodiversity, and fish die-offs. Meat production contributes disproportionately to these problems, in part because feeding grain to livestock to produce meat—instead of feeding it directly to humans—involves a large energy loss, making animal agriculture more resource intensive than other forms of food production. ... One personal act that can have a profound impact on these issues is reducing meat consumption. To produce 1 pound of feedlot beef requires about 2,400 gallons of water and 7 pounds of grain (42). Considering that the average American consumes 97 pounds of beef (and 273 pounds of meat in all) each year, even modest reductions in meat consumption in such a culture would substantially reduce the burden on our natural resources. [13]

The environmental impacts of animal production vary with the method of production, although "[overall] impacts of the lowest-impact animal products typically exceed those of vegetable substitutes". [7]

Average greenhouse gas emissions per diet

Mean greenhouse gas emissions per 2,000 kcal by diet type [14]
DietMean dietary emissions

(In kilograms of carbon dioxide equivalents)

All meat-eaters
5.93
High meat-eaters ( ≥ 100 g/day)
7.19
Medium meat-eaters (50–99 g/day)
5.63
Low meat-eaters ( < 50 g/day)
4.67
Fish-eaters
3.91
Vegetarians
3.81
Vegans
2.89

Methane

A 2017 study published in the journal Carbon Balance and Management found animal agriculture's global methane emissions are 11% higher than previous estimates, based on data from the Intergovernmental Panel on Climate Change. [15]

Pesticide use

According to a 2022 report from World Animal Protection and the Center for Biological Diversity around 235 million pounds of pesticides are used for animal feed purposes annually in the United States alone, which threatens thousands of endangered species of plants and animals. Rather than arguing for biological agriculture, the report argues consumers should reduce their consumption of animal products and to transition towards plant-based diets in order to hinder the growth of factory farming and protect endangered species of wildlife. [16]

Land use

The amount of globally needed agricultural land would be reduced by almost half if no beef or mutton would be eaten. Land-use-of-different-diets-Poore-Nemecek.png
The amount of globally needed agricultural land would be reduced by almost half if no beef or mutton would be eaten.

A 2003 paper published in the American Journal of Clinical Nutrition , after calculating effects on energy, land, and water use, concluded that meat-based diets require more resources and are less sustainable than lacto-ovo vegetarian diets. [18] "The water required for a meat-eating diet is twice as much needed for a 2,000-litre-a-day vegetarian diet". [19]

According to Cornell University scientists: "The heavy dependence on fossil energy suggests that the US food system, whether meat-based or plant-based, is not sustainable". [20] However, they also write: "The meat-based food system requires more energy, land, and water resources than the lactoovovegetarian diet. In this limited sense, the lactoovovegetarian diet is more sustainable than the average American meat-based diet." [20] One of these Cornell scientists "depicted grain-fed livestock farming as a costly and nonsustainable way to produce animal protein", but "distinguished grain-fed meat production from pasture-raised livestock, calling cattle-grazing a more reasonable use of marginal land". [21]

The use of ever increasing amounts of land for meat production and livestock rearing instead of plants and grains for human diets is, according to sociologist David Nibert, "a leading cause of malnutrition, hunger, and famine around the world." [22]

Land degradation

We must change our diet. The planet can't support billions of meat-eaters.

David Attenborough [23]

Another agricultural effect is on land degradation. Cattle are a known cause for soil erosion through trampling of the ground and overgrazing. [24] Much of the world's crops are used to feed animals. [25] With 30 percent of the Earth's land devoted to raising livestock, [26] a major cutback is needed to keep up with growing population. Demand for meat is expected to double by 2050; [27] in China, for example, where vegetable-based diets were once the norm, demand for meat will continue to be great in absolute terms, even though demand growth will slow. [28] As countries are developing, incomes are increasing, and consumption of animal products is associated with prosperity. This growing demand is unsustainable. [29]

The ability of soil to absorb water by infiltration is important for minimizing runoff and soil erosion. Researchers in Iowa reported that a soil under perennial pasture grasses grazed by livestock was able to absorb far more water than the same kind of soil under two annual crops: corn and soybeans. [30] [31]

Biodiversity loss

Biomass of mammals on Earth [32] [33]

   Livestock, mostly cattle and pigs (60%)
   Humans (36%)
   Wild mammals (4%)

The 2019 IPBES Global Assessment Report on Biodiversity and Ecosystem Services found that the primary driver of biodiversity loss is human land use, which deprives other species of land needed for their survival, with the meat industry playing a significant role in this process. Around 25% of Earth's ice-free land is used for cattle rearing. [34] Other studies have also warned that meat consumption is accelerating mass extinctions globally. [35] [36] [37] A 2017 study by the World Wildlife Fund attributed 60% of biodiversity loss to the land needed to rear tens of billions of farm animals. [38]

A May 2018 study stated that while wildlife has been decimated since the dawn of human civilization, with wild mammals plummeting by 83%, livestock populations reared by humans for consumption have increased. [39] Livestock make up 60% of the biomass of all mammals on Earth, followed by humans (36%) and wild mammals (4%). [39] As for birds, 70% are domesticated, such as poultry, whereas only 30% are wild. [39] [40]

Water

Animal production has a large impact on water pollution and usage. According to the Water Education Foundation, it takes 2,464 gallons of water to produce one pound of beef in California, whereas it takes only 25 gallons of water to produce one pound of wheat. [41] Raising a large amount of livestock creates a massive amount of manure and urine, which can pollute natural resources by changing the pH of water, contaminates the air, and emits a major amount of gas that directly affects global warming. As most livestock are raised in small confined spaces to cut down on cost, this increases the problem of concentrated waste. Livestock in the United States produces 2.7 trillion pounds of manure each year, which is ten times more than what is produced by the entire U.S. population. There are issues with how animal waste is disposed, as some is used as fertilizer while some farmers create manure lagoons which store millions of gallons of animal waste which is extremely unsafe and detrimental to the environment. [41]

Relation to other arguments

Massive reductions in meat consumption in industrial nations will ease the health care burden while improving public health; declining livestock herds will take pressure off rangelands and grainlands, allowing the agricultural resource base to rejuvenate. As populations grow, lowering meat consumption worldwide will allow more efficient use of declining per capita land and water resources, while at the same time making grain more affordable to the world's chronically hungry. [42]

Worldwatch Institute, an independent environmental research institute

Although motivations frequently overlap, environmental vegetarians and vegans can be contrasted with those who are primarily motivated by concerns about animal welfare (one kind of ethical vegetarianism), health, or who avoid meat to save money or out of necessity (economic vegetarianism). [43] [44] Some also believe vegetarianism will improve global food security, or curb starvation.

Health

A study in Climate Change concluded "if ... average diets among UK adults conformed to WHO recommendations, their associated GHG emissions would be reduced by 17%. Further GHG emission reductions of around 40% could be achieved by making realistic modifications to diets so that they contain fewer animal products and processed snacks and more fruit, vegetables and cereals." [45] A study in The Lancet estimated that the "30% reduction in livestock production" by 2030 required to meet the UK Committee on Climate Change's agricultural would also result in a roughly 15% decrease in ischaemic heart disease. [10]

A small list of the benefits of a vegan/vegetarian diet on ones health Veganism health.png
A small list of the benefits of a vegan/vegetarian diet on ones health

A 2018 report published in PNAS asserted that farmers in the United States could sustain more than twice as many people than they do currently if they abandoned rearing farm animals for human consumption and instead focused on growing plants. [46]

For developed countries, a CAST report estimates an average of 2.6 pounds of grain feed per pound of beef carcass meat produced. For developing countries, the estimate is 0.3 pounds per pound. (Some very dissimilar figures are sometimes seen; the CAST report discusses common sources of error and discrepancies among such figures.) [47] In 2007, US per capita beef consumption was 62.2 pounds per year, and US per capita meat (red meat plus fish plus poultry) consumption totaled 200.7 pounds (boneless trimmed weight basis). [48]

Support

People in developed countries consume a substantially larger proportion of meat than those in developing countries. Sources of dietary energy-consumtion (%25) 2001-2003 (FAO).svg
People in developed countries consume a substantially larger proportion of meat than those in developing countries.

Globalization and modernization has resulted in Western consumer cultures spreading to countries like China and India, including meat-intensive diets which are supplanting traditional plant-based diets. Around 166 to more than 200 billion land and aquatic animals are consumed by a global population of over 7 billion annually, which philosopher and animal rights activist Steven Best argues is "completely unsustainable". [50] [51] A 2018 study published in Science states that meat consumption is set to increase by some 76% by 2050 as the result of human population growth and rising affluence, which will increase greenhouse gas emissions and further reduce biodiversity. [52] [53]

A 2018 report in Nature found that a significant reduction in meat consumption is necessary to mitigate climate change, especially as the population rises to a projected 10 billion in the coming decades. [54] According to a 2019 report in The Lancet , global meat consumption needs to be reduced by 50 percent to mitigate for climate change. [55]

In November 2017, 15,364 world scientists signed a Warning to Humanity calling for, among other things, drastically diminishing our per capita consumption of meat. [56]

A 2010 report from the United Nations Environment Programme's (UNEP) International Panel of Sustainable Resource Management stated:

Impacts from agriculture are expected to increase substantially due to population growth and increasing consumption of animal products. Unlike fossil fuels, it is difficult to look for alternatives: people have to eat. A substantial reduction of impacts would only be possible with a substantial worldwide diet change, away from animal products. [25] [57]

The aforementioned Global Assessment Report on Biodiversity and Ecosystem Services also suggested that a reduction in meat consumption would be required to help preserve biodiversity. [34]

A 2010 UN report, Assessing the Environmental Impacts of Consumption and Production , argued that animal products "in general require more resources and cause higher emissions than plant-based alternatives". [58] : 80  It proposed a move away from animal products to reduce environmental damage. [c] [59]

Reduction of one's carbon footprint for various actions. A plant-based diet in this study referred to a lacto-ovo vegetarian diet. Vegan diets are known to have lower carbon footprints. Wynes Nicholas CO2 emissions savings.svg
Reduction of one's carbon footprint for various actions. A plant-based diet in this study referred to a lacto-ovo vegetarian diet. Vegan diets are known to have lower carbon footprints.

A 2015 study determined that significant biodiversity loss can be attributed to the growing demand for meat, a significant driver of deforestation and habitat destruction, with species-rich habitats converted to agriculture for livestock production. [61] [62] [63] A 2017 World Wildlife Fund study found that 60% of biodiversity loss can be attributed to the vast scale of feed crop cultivation needed to rear tens of billions of farm animals, which puts enormous strain on natural resources, resulting in extensive loss of lands and species. [64] In 2017, 15,364 world scientists signed a warning to humanity calling for, among other things, "promoting dietary shifts towards mostly plant-based foods". [65]

According to a July 2019 report by the World Resources Institute the global population will increase to roughly 10 billion by the middle of the century, with demand for ruminant meat rising by 88%. The report posits that Americans and Europeans will need to reduce their beef consumption by 40% and 22% respectively in order to feed so many people and at the same time avert an ecological catastrophe. [66]

In November 2019, a warning on the "climate emergency" from over 11,000 scientists from over 100 countries said that "eating mostly plant-based foods while reducing the global consumption of animal products, especially ruminant livestock, can improve human health and significantly lower GHG emissions (including methane in the “Short-lived pollutants” step)." The warning also says it this will "free up croplands for growing much-needed human plant food instead of livestock feed, while releasing some grazing land to support natural climate solutions." [67] [68]

A 2020 study by researchers from the University of Michigan and Tulane University, which was commissioned by the Center for Biological Diversity, asserts that if the U.S. cut its meat consumption by half, it could result in diet-related GHG emissions being reduced by 35%, a decline of 1.6 billion tons. [69]

A 2019 correction to a major 2018 study in Science of food's impact on the environment found that, after the negative emissions of land use change were accounted for, eliminating animal products from the food system would reduce total global greenhouse gas emissions from all sectors by 28%. [7] [70]

A 2018 study found that global adoption of plant-based diets would reduce agricultural land use by 76% (3.1 billion hectares, an area the size of Africa) and cut total global greenhouse gas emissions by 28%. Half of this emissions reduction came from avoided emissions from animal production including methane and nitrous oxide, and half from trees re-growing on abandoned farmlands that remove carbon dioxide from the air. [71] [72] The authors conclude that avoiding meat and dairy is the "single biggest way" to reduce one's impact on Earth. [73]

The 2019 IPBES Global Assessment Report on Biodiversity and Ecosystem Services found that industrial agriculture and overfishing are the primary drivers of the extinction crisis, with the meat and dairy industries having a substantial impact. [74] [75] On 8 August 2019, the IPCC released a summary of the 2019 special report which asserted that a shift towards plant-based diets would help to mitigate and adapt to climate change. [76]

A 2022 study found that for high-income nations alone 100 billion tons of carbon dioxide could be removed from the air by the end of the century through a shift to plant-based diets and re-wilding of farmlands. The researchers coined the term double climate dividend to describe the effect that re-wilding after a diet shift can have. [77] [78] But they note: "We don't have to be purist about this, even just cutting animal intake would be helpful. If half of the public in richer regions cut half the animal products in their diets, you're still talking about a massive opportunity in environmental outcomes and public health". [79]

A 2023 study published in Nature Food found that a vegan diet vastly decreases the impact on the environment from food production, such as reducing emissions, water pollution and land use by 75%, reducing the destruction of wildlife by 66% and the usage of water by 54%. [80]

Criticism

Bill Mollison has argued in his Permaculture Design Course that vegetarianism exacerbates soil erosion. This is because removing a plant from a field removes all the nutrients it obtained from the soil while removing an animal leaves the field intact. On US farmland, much less soil erosion is associated with pastureland used for livestock grazing than with land used for the production of crops. [81] However, as mentioned above, all dietary change scenarios that assume decreased meat consumption are strictly less land-demanding. Robert Hart has also developed forest gardening, which has since been adopted as a common permaculture design element, as a sustainable plant-based food production system. [82] A balanced diet based on the food pyramid would present as an alternative to vegetarianism.

In 2015, researches from Carnegie Mellon University claimed that environmental vegetarianism appears more harmful than helpful to our environment. Environmental vegetarianism actually takes more environmental costs, environmentally and financially, which backfires. Paul Fischbeck, Michelle Tom, and Chris Hendrickson, researchers in civil and environmental engineering at Carnegie Mellon University, investigated the impact of America's obesity crisis on the environment by analyzing the food supply chain's resource usage. The study offers a nuanced exploration into the environmental impact of dietary choices, specifically contrasting the perceived benefits of vegetarian and USDA-recommended "healthier" diets against their ecological footprints. The research underscores that while reducing overall calorie intake can decrease the environmental burden by around 9%, opting for diets heavy in fruits, vegetables, dairy, and seafood significantly increases resource demands—leading to a 38% rise in energy consumption, a 10% increase in water use, and a 6% uptick in greenhouse gas emissions. [83] This counterintuitive result pivots on the intensive resources required to produce these "healthier" food options, challenging simplified narratives around diet and sustainability and pointing to the need for a comprehensive understanding of food's environmental costs.

In 2017, a study in PNAS claimed that U.S. GHG emissions would only decrease 2.6% (or 28% of agricultural GHG emissions) if animals were completely removed from U.S. agriculture. [84] However, the study's underlying assumptions were heavily criticized. [85] [86] [87] The authors defended their work in a follow-up 2018 letter. [88] Furthermore, the animals removed from agriculture would remain alive and emitting GHG.

In 2019, Loma Linda University School of Public Health published a research article which outlined that while, generally, vegetarian diet is more environmentally sustainable than omnivorous diet, its environmental benefits heavily depend on the specific foods included in the diet. [89] This way, if beef is replaced by a larger quantity of dairy, the environmental benefit of such a switch may be close to zero. [90] Similarly, if the vegetarian diet includes out-of-season fruits or vegetables cultivated in high-energy-consumption greenhouses, the GHG emissions offset could ultimately be reversed. [91]

Evidence suggests that intensive livestock farming is a poor solution to world hunger, given its impact on personal health and the environment, but intensive industrialised farming of soya, maize and grains comes at a significant carbon cost, too – as does flying in the ingredients to keep berries and nut butters on acai bowls or avocado on toast. [92]

See also

Notes

  1. ↑ This is in line with the FAO's earlier estimate of 18%, published in Livestock's Long Shadow in 2006. They caution that "the two figures cannot be accurately compared, as reference periods and sources differ."
  2. ↑ This is in line with the FAO's more recent figure of 14.5 percent. They caution that "the two figures cannot be accurately compared, as reference periods and sources differ." [2]
  3. ↑ United Nations Environment Programme (2010): "Impacts from agriculture are expected to increase substantially due to population growth, increasing consumption of animal products. Unlike fossil fuels, it is difficult to look for alternatives: people have to eat. A substantial reduction of impacts would only be possible with a substantial worldwide diet change, away from animal products." [58] : 82 

Related Research Articles

<span class="mw-page-title-main">Meat</span> Animal flesh eaten as food

Meat is animal tissue, often muscle, that is eaten as food. Humans have hunted and farmed other animals for meat since prehistory. The Neolithic Revolution allowed the domestication of vertebrates, including chickens, sheep, goats, pigs, horses, and cattle, starting around 11,000 years ago. Since then, selective breeding has enabled farmers to produce meat with the qualities desired by producers and consumers.

<span class="mw-page-title-main">Meat alternative</span> Plant-based food made to resemble meat

A meat alternative or meat substitute, is a food product made from vegetarian or vegan ingredients, eaten as a replacement for meat. Meat alternatives typically approximate qualities of specific types of meat, such as mouthfeel, flavor, appearance, or chemical characteristics. Plant- and fungus-based substitutes are frequently made with soy, but may also be made from wheat gluten as in seitan, pea protein as in the Beyond Burger, or mycoprotein as in Quorn. Alternative protein foods can also be made by precision fermentation, where single cell organisms such as yeast produce specific proteins using a carbon source; as well as cultivated or laboratory grown, based on tissue engineering techniques. The ingredients of meat alternative include 50–80% water, 10–25% textured vegetable proteins, 4–20% non-textured proteins, 0–15% fat and oil, 3-10% flavors/spices, 1-5% binding agents and 0-0.5% coloring agents. 

<span class="mw-page-title-main">Plant-based diet</span> Diet consisting mostly or entirely of plant-based foods

A plant-based diet is a diet consisting mostly or entirely of plant-based foods. Plant-based diets encompass a wide range of dietary patterns that contain low amounts of animal products and high amounts of fiber-rich plant products such as vegetables, fruits, whole grains, legumes, nuts and seeds. They do not need to be vegan or vegetarian, but are defined in terms of low frequency of animal food consumption.

<span class="mw-page-title-main">Food miles</span> Distance food is transported from production to consumption

Food miles is the distance food is transported from the time of its making until it reaches the consumer. Food miles are one factor used when testing the environmental impact of food, such as the carbon footprint of the food.

<span class="mw-page-title-main">Ethics of eating meat</span> Food ethics topic

Conversations regarding the ethics of eating meat are focused on whether or not it is moral to eat non-human animals. Ultimately, this is a debate that has been ongoing for millennia, and it remains one of the most prominent topics in food ethics. Individuals who promote meat consumption do so for a number of reasons, such as health, cultural traditions, religious beliefs, and scientific arguments that support the practice. Those who support meat consumption typically argue that making a meat-free diet mandatory would be wrong because it fails to consider the individual nutritional needs of humans at various stages of life, fails to account for biological differences between the sexes, ignores the reality of human evolution, ignores various cultural considerations, or because it would limit the adaptability of the human species.

<span class="mw-page-title-main">Animal product</span> Food product derived from non-human animal body

An animal product is any material derived from the body of a non-human animal. Examples are fat, flesh, blood, milk, eggs, and lesser known products, such as isinglass and rennet.

<span class="mw-page-title-main">Sustainable food system</span> Balanced growth of nutritional substances and their distribution

A sustainable food system is a type of food system that provides healthy food to people and creates sustainable environmental, economic, and social systems that surround food. Sustainable food systems start with the development of sustainable agricultural practices, development of more sustainable food distribution systems, creation of sustainable diets, and reduction of food waste throughout the system. Sustainable food systems have been argued to be central to many or all 17 Sustainable Development Goals.

<span class="mw-page-title-main">Low-carbon diet</span> Diet to reduce greenhouse gas emissions

A low-carbon diet is any diet that results in lower greenhouse gas emissions. Choosing a low carbon diet is one facet of developing sustainable diets which increase the long-term sustainability of humanity. Major tenets of a low-carbon diet include eating a plant-based diet, and in particular little or no beef and dairy. Low-carbon diets differ around the world in taste, style, and the frequency they are eaten. Asian countries like India and China feature vegetarian and vegan meals as staples in their diets. In contrast, Europe and North America rely on animal products for their Western diets.

<span class="mw-page-title-main">Environmental impacts of animal agriculture</span> Impact of farming animals on the environment

The environmental impacts of animal agriculture vary because of the wide variety of agricultural practices employed around the world. Despite this, all agricultural practices have been found to have a variety of effects on the environment to some extent. Animal agriculture, in particular meat production, can cause pollution, greenhouse gas emissions, biodiversity loss, disease, and significant consumption of land, food, and water. Meat is obtained through a variety of methods, including organic farming, free-range farming, intensive livestock production, and subsistence agriculture. The livestock sector also includes wool, egg and dairy production, the livestock used for tillage, and fish farming.

<span class="mw-page-title-main">Sustainable diet</span> Diet that contributes to the broader environmental and social sustainability

Sustainable diets are "dietary patterns that promote all dimensions of individuals’ health and wellbeing; have low environmental pressure and impact; are accessible, affordable, safe and equitable; and are culturally acceptable". These diets are nutritious, eco-friendly, economically sustainable, and accessible to people of various socioeconomic backgrounds. Sustainable diets attempt to address nutrient deficiencies and excesses, while accounting for ecological phenomena such as climate change, loss of biodiversity and land degradation. These diets are comparable to the climatarian diet, with the added domains of economic sustainability and accessibility.

The environmental impact of agriculture is the effect that different farming practices have on the ecosystems around them, and how those effects can be traced back to those practices. The environmental impact of agriculture varies widely based on practices employed by farmers and by the scale of practice. Farming communities that try to reduce environmental impacts through modifying their practices will adopt sustainable agriculture practices. The negative impact of agriculture is an old issue that remains a concern even as experts design innovative means to reduce destruction and enhance eco-efficiency. Animal agriculture practices tend to be more environmentally destructive than agricultural practices focused on fruits, vegetables and other biomass. The emissions of ammonia from cattle waste continue to raise concerns over environmental pollution.

<span class="mw-page-title-main">Livestock</span> Animals kept for production of meat, eggs, milk, wool, etc.

Livestock are the domesticated animals raised in an agricultural setting in order to provide labour and produce diversified products for consumption such as meat, eggs, milk, fur, leather, and wool. The term is sometimes used to refer solely to animals who are raised for consumption, and sometimes used to refer solely to farmed ruminants, such as cattle, sheep, and goats. Horses are considered livestock in the United States. The USDA classifies pork, veal, beef, and lamb (mutton) as livestock, and all livestock as red meat. Poultry and fish are not included in the category. The latter is likely due to the fact that fish products are not governed by the USDA, but by the FDA.

<span class="mw-page-title-main">Pescetarianism</span> Dietary practice of incorporating seafood into an otherwise vegetarian diet

Pescetarianism is a dietary practice in which seafood is the only source of meat in an otherwise vegetarian diet. The inclusion of other animal products, such as eggs and dairy, is optional. According to research conducted from 2017 to 2018, approximately 3% of adults worldwide are pescetarian.

<span class="mw-page-title-main">Individual action on climate change</span> What everyone can do to limit climate change

Individual action on climate change is about personal choices that everyone can make to reduce the greenhouse gas emissions of their lifestyles. Such personal choices are related to the way people travel, their diet, shopping habits, consumption of goods and services, number of children they have and so on. Individuals can also get active in local and political advocacy work around climate action. People who wish to reduce their carbon footprint, can for example reduce their air travel for holidays, use bicycles instead of cars on a daily basis, eat a plant-based diet, and use consumer products for longer. Avoiding meat and dairy products has been called "the single biggest way" how individuals can reduce their environmental impacts.

<i>Cowspiracy</i> 2014 American documentary film

Cowspiracy: The Sustainability Secret is a 2014 American documentary film produced and directed by Kip Andersen and Keegan Kuhn. The film explores the impact of animal agriculture on the environment—examining such environmental concerns as climate change, water use, deforestation, and ocean dead zones—and investigates the policies of several environmental organizations on the issue.

A meat tax is a tax levied on meat and/or other animal products to help cover the health and environmental costs that result from using animals for food. Livestock is known to significantly contribute to global warming, and to negatively impact global nitrogen cycles and biodiversity.

Gidon Eshel is an American geophysicist best known for his quantification of the "geophysical consequences of agriculture and diet". As of 2017, he is research professor at Bard College in New York. He is known for his research on the environmental impacts of plant-based diets.

<span class="mw-page-title-main">Climate-smart agriculture</span> System for agricultural productivity

Climate-smart agriculture (CSA) is a set of farming methods that has three main objectives with regards to climate change. Firstly, they use adaptation methods to respond to the effects of climate change on agriculture. Secondly, they aim to increase agricultural productivity and to ensure food security for a growing world population. Thirdly, they try to reduce greenhouse gas emissions from agriculture as much as possible. Climate-smart agriculture works as an integrated approach to managing land. This approach helps farmers to adapt their agricultural methods to the effects of climate change.

<span class="mw-page-title-main">Greenhouse gas emissions from agriculture</span>

The amount of greenhouse gas emissions from agriculture is significant: The agriculture, forestry and land use sectors contribute between 13% and 21% of global greenhouse gas emissions. Emissions come from direct greenhouse gas emissions. And from indirect emissions. With regards to direct emissions, nitrous oxide and methane makeup over half of total greenhouse gas emissions from agriculture. Indirect emissions on the other hand come from the conversion of non-agricultural land such as forests into agricultural land. Furthermore, there is also fossil fuel consumption for transport and fertilizer production. For example, the manufacture and use of nitrogen fertilizer contributes around 5% of all global greenhouse gas emissions. Livestock farming is a major source of greenhouse gas emissions. At the same time, livestock farming is affected by climate change.

Vegetarianism and veganism are growing trends in China. Public Radio International estimated in 2013 that 4–5% of China's population was vegetarian, representing over 50 million people.

References

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  2. 1 2 "Key facts and findings". Food and Agriculture Organization. Archived from the original on 4 June 2021. Retrieved 29 April 2019.
  3. ↑ Schiermeier, Quirin (8 August 2019). "Eat less meat: UN climate change report calls for change to human diet". Nature . Retrieved 10 August 2019.
  4. ↑ "Climate change food calculator: What's your diet's carbon footprint?". 13 December 2018. Retrieved 30 April 2019.
  5. ↑ Ripple WJ, Wolf C, Newsome TM, Galetti M, Alamgir M, Crist E, Mahmoud MI, Laurance WF (13 November 2017). "World Scientists' Warning to Humanity: A Second Notice". BioScience . 67 (12): 1026–1028. doi: 10.1093/biosci/bix125 . hdl: 11336/71342 .
  6. ↑ Carrington, Damian (3 February 2021). "Plant-based diets crucial to saving global wildlife, says report". The Guardian . Retrieved 18 November 2021.
  7. 1 2 3 Nemecek, T.; Poore, J. (2018). "Reducing food's environmental impacts through producers and consumers". Science. 360 (6392): 987–992. Bibcode:2018Sci...360..987P. doi: 10.1126/science.aaq0216 . ISSN   0036-8075. PMID   29853680.
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