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Table of Contents
The dietary choices we humans make have a very large impact on the Earth's natural resources. These are choices that we all make, every day. This is powerful, because it means that everyone of us has the power to make impactful choices every day. Even if our individual choices seem small, together we absolutely make a difference.
Here are a few resources that can help you determine the carbon impact of the foods you eat.
You may not be ready for a "Vegan 4 Life" tattoo, but every time you put a plant in your mouth instead of an animal, you're helping lower overall greenhouse emissions. So come on, let's save the world one bite at a time!
https://www.pesticidereform.org/climate-change/
-Pesticide use is itself a major contributor to climate change
Worldwide Opportunities on Organic Farms, USA (WWOOF USA) "is part of a worldwide effort to link visitors with organic farmers, promote an educational exchange, and build a global community conscious of ecological farming practices.
Visitors, or 'WWOOFers', share in daily life with their host and learn about organic agriculture, while spending about half of each day helping out on a farm."
Click the Food & Carbon button to learn more about how our food production system both emits and sequesters carbon - which food choices cause the most emissions, vs which practices sequester the most.
"Methane from human activity is emitted by five key industries: oil and gas, coal, agriculture, solid waste, and waste water."
"The agriculture sector, which emits an estimated 40 to 50 percent of anthropogenic methane, could achieve a 12 percent reduction in these emissions by 2030 and a 30 percent reduction by 2050. Agricultural emissions are primarily the result of ruminant animals (principally cows and sheep), farming practices, and rice production." - McKinsey Sustainability
Methane is a much more powerful greenhouse gas between 20-28x stronger than carbon dioxide, though it is shorter-lived in our atmosphere. There are natural sources of methane such a swamps and bogs, but also seriously less natural sources like the leaky fossil fuel infrastructure that we have scattered all over the world.
If we focus in on our food production we find that the biggest contributors from our diets (listed from greatest to lesser) are:
Livestock
Cattle grazed on pasture approximately 43% more than feed lot finished or factory farmed cattle.
Sheep grazed on pasture
Factory farmed cattle
Factory farmed sheep
Pigs foraging on pasture
Poultry foraging on pasture
Factory-farmed pigs
Factory-farmed poultry
Rice - specifically rice grown in flooded paddies or other anaerobic conditions
A Harvard report published in 2018, found that "shifting U.S. beef production to exclusively grass-fed, pastured systems would require 30% more cattle just to keep up with current demand and production levels, and that the average methane footprint per unit of beef produced would increase by 43% due to the slower growth rates and higher methane conversion rates of grass-fed cattle. This would increase the U.S.’s total methane emissions by approximately 8%, according to the researchers."
Evidence has surfaced that the food production of 5 countries out ways the ecological impact of other countries "... India, China, the United States, Brazil, and Pakistan—account for 43.8% of the global cumulative impact of producing food...
Of this, terrestrial food production contributes a larger cumulative pressure than do aquatic sources of food. And yet, despite providing just 1.1% of global nourishment, food from the ocean causes a surprisingly large 10% of cumulative environmental pressure, due to the effects of habitat disturbance, the researchers found.
... Beef production is widely accepted as being the worst for the planet because of the associated emissions—but when factoring in water use and pollution, pig farming actually has the larger cumulative environmental footprint. Similarly, some types of fish pose bigger environmental pressures than chicken does."
Most people know that our food costs us in emissions, water, and fertilizer, but there are some other issues that people are often unaware of.
According to this Oxford report, the majority of livestock emissions are from feed production and the animals themselves, with only 6% of their lifetime emissions coming from transport and processing.
As you can see from the graph below, animal products tend to produce much larger quantities of GHG emissions than plant-based foods.
"The stench emanating from livestock carriers is legendary amongst seafarers. Some joke that they can be smelt before they appear on the ship’s radar."
"Carried by the oldest saltwater fleet, about 115 vessels in total, many millions of animals have been exported around the world by sea. The number of cattle exported live from Australia alone each year has varied between 620,000 and 1,310,000 for the last 10 years. The cattle are shipped to markets in Asia, the Middle East, Europe and Russia."
"The excrement has a high water content and is considered benign. It is treated like sewage under Marpol Annex IV and doesn’t need to be treated before dumping far from shore.
Some masters like excrement washwater to be released at night, when it won’t be captured on satellite images, says Dr Lynn Simpson, an Australian veterinarian who has made 57 live export voyages ranging from around 10 to 30 days’ duration. In her experience, masters take a very cautious approach to Marpol Annex IV regulations which, simply put, state that the excrement can be discharged at a distance of more than 12 nautical miles from the nearest land at a moderate rate when the ship is en route and proceeding at not less than four knots."
"On voyages of more than 10 days, ships are washed down every three to five days. On big ships, this operation can take three days to complete. There are no shore-based facilities to accept livestock excrement, so the only excrement on board that reaches shore is that stuck to the animals themselves.
Simpson was a well-respected live export veterinarian when she was hired by the Australian government to submit a report on the trade in 2012 after media reports of live export cruelty. She believes that the report was generally bland, except in one respect: It was full of pictures – some showing animals covered in excrement."
- https://maritime-executive.com/features/live-export-following-the-effluent-trail
All this feces plus handling sick, infected animals poses a growing danger to humans working with or consuming the animals, as wells as wildlife who live in the areas where livestock waste or even corpses are thrown overboard.
These dangers include:
Ringworm is actually a fungal infections which generally spreads from livestock and pets to humans, but also from person to person via skin contact. "A point to note is that cattle ringworm is the most serious form of ringworm in Humans."
Scabby Mouth ("orf" in humans) is a highly contagious pox virus that is common in sheep shearers due to contact with infected animals. It's common around Victoria, Australia due to the sheep industry.
Septicemia which is a serious bloodstream infection that occurs when a bacterial infection enters the bloodstream from the skin, lungs, kidneys, bladder or other parts.
Tuberculosis "Bovine tuberculosis is a chronic bacterial disease of animals caused by members of the Mycobacterium tuberculosis complex, primarily by M. bovis. It is a major zoonotic disease, and cattle are the main source of infection for humans. It also affects other domesticated animals such as sheep, goats, equines, pigs, dogs and cats, and wildlife species such as wild boars, deer, and antelopes. The name ‘tuberculosis’ comes from the nodules called ‘tubercles’, which form in the lymph nodes and other tissues of affected animals and humans." although under control in many regions "Bovine tuberculosis remains a serious problem for animal and human health in many developing countries. "
"Australian veterinarians are required to treat sick and injured animals, and so excrement and carcasses can contain traces of treatment drugs. The residue from one drug commonly used, Oxytetracycline, can be present in the animal’s body for 90 days, and Australia’s meat export industry must observe and declare a withholding period of 90 days between medicating an animal with this drug and human consumption. More typically though, residues from other drugs dissipate in less than two weeks."
"Carcasses are thrown overboard whole, in part, or after being mechanically processed in equipment such as a grinder. Based on death rates for 2015, Australian live export voyages would have resulted in approximately 12,500 sheep and 1,300 cattle carcasses being disposed of at sea last year."
...
"“Unless post-mortems are conducted, the usual practice is to throw all dead sheep overboard entire. You can often watch them bobbing on the water’s surface in the ships wake as you steam on.”
Simpson says that whole, slit or part carcasses don’t sink straight away, and when they do, they can bloat and rise to the surface again."
- https://maritime-executive.com/features/live-export-following-the-effluent-trail
Farmed Animal Funders "Our group is open to all individuals and foundations giving more than $250,000 per year to end factory farming."
Food for Thought "We have several grant opportunities to help you make these goals a reality!"
Eat The Change "ETC Impact™ is a grant program working to promote and expand access to climate-friendly foods. We're donating more than $1.25 million over three years to support a diverse group of changemaking nonprofit organizations."
Vegan Hacktivists: Grants "We connect you with funders providing up to $1,000 USD in seed funding for animal rights activism! We seek individual and grassroots groups whose primary purpose is to help reduce suffering for farmed animals."