Beef pollutes most of all. The environmental impact of the steak

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Carlos Laforet Coll
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Eggs, dairy, chicken, beef and pork. What pollutes the environment the most? To determine which of these animal derivatives has the greatest environmental impact is a research conducted by Yale University and published in the journal of the United States Academy of Sciences (PNAS). And guess the answer?



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Eggs, dairy, chicken, beef and pork. What pollutes the environment the most? One determines which of these animal derivatives has the greatest environmental impact research conducted by Yale University and published in the journal of the United States Academy of Sciences (PNAS). And guess the answer?



If you answered beef, you are right. Beef production uses more water, land and nitrogen fertilizer than the others and produces more gas in a comparison by calories consumed. It is the first time that their impact has been compared with that of other products of animal origin. The authors reveal to us which one calorie production of beef uses 11 times more water and 6 times more nitrogen fertilizers compared to the other.

“Quantifying the environmental impacts of the various categories of animals, mostly deriving from feed production, is a great sustainability challenge. Here, the impact on land, irrigation water and nitrogen of feed production is quantified, together with estimates of full life cycle greenhouse gas emissions, for each of the main categories of animal products in the diet of animals. United States. Our calculations reveal that the environmental costs per calorie consumed of dairy, poultry, pork and eggs they are comparable to each other, but surprisingly lower than the impacts of beef“, Explain the researchers.

The team also calculated that potato, wheat and rice production requires on average two to six times fewer resources per calorie consumed than those required by non-beef production.

READ also: Meat consumes the same emissions as half of British cars

According to the document, approximately 40 percent of the total land area of ​​the United States is currently devoted to the production of animal products, including land needed for grazing, as well as crops to produce feed. Much of this land could instead be devoted to crops that are directly consumable by humans, and would require fewer resources per calorie.



Roberta Ragni

Read also:

Steak is the main cause of air pollution

The true costs of meat production

Reducing the consumption of meat and cheese is the only way to reduce climate change

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