Livestock contribute far less to emissions than activists claim, and eliminating them would weaken nutrition, resilience and food security

The war on livestock pushed by Net Zero ideologues is not environmental science; it’s a dangerous, misguided campaign that threatens global food security.

The priests of Net Zero 2050 have declared war on the cow, the pig and the chicken. From glass towers in London, Brussels and Ottawa, they argue that cutting animal protein, shrinking herds and pushing people toward lentils and lab-grown alternatives will save the climate from a steer’s burp.

This is not science. It is an urban belief that billions of people can be pushed toward a diet promoted by some policymakers who have never worked a field or heard a rooster at dawn. Eliminating or sharply reducing livestock would destabilize food systems and increase global hunger. In Canada, livestock account for about three per cent of total greenhouse gas emissions, according to Environment and Climate Change Canada.

Activists speak as if livestock suddenly appeared in the last century, belching fossil carbon into the air. In reality, the relationship between humans and the animals we raise is older than agriculture. It is part of how our species developed.

Two million years ago, early humans ate meat and marrow, mastered fire and developed larger brains. The expensive-tissue hypothesis, a theory that explains how early humans traded gut size for brain growth, is not ideology; it is basic anthropology. Animal fat and protein helped build the human brain and the societies that followed.

Domestication deepened that relationship. When humans raised cattle, sheep, pigs and chickens, we created a long partnership that shaped both species. Wolves became dogs. Aurochs, the wild ancestors of modern cattle, became domesticated animals. Junglefowl became chickens that could lay eggs reliably. These animals lived with us because it increased their chances of survival.

In return, they received protection, veterinary care and steady food during drought and winter. More than 70,000 Canadian farms raise cattle, hogs, poultry or sheep, supporting hundreds of thousands of jobs across the supply chain.

Livestock also protected people from climate extremes. When crops failed, grasslands still produced forage, and herds converted that into food. During the Little Ice Age, millions in Europe starved because grain crops collapsed. Pastoral communities, which lived from herding livestock rather than crops, survived because their herds could still graze. Removing livestock would offer little climate benefit, yet it would eliminate one of humanity’s most reliable protections against environmental shocks.

Today, a Maasai child in Kenya or northern Tanzania drinking milk from a cow grazing on dry land has a steadier food source than a vegan in a Berlin apartment relying on global shipping. Modern genetics and nutrition have pushed this relationship further. For the first time, the poorest billion people have access to complete protein and key nutrients such as iron, zinc, B12 and retinol, a form of vitamin A, that plants cannot supply without industrial processing or fortification. Canada also imports significant volumes of soy-based and other plant-protein products, making many urban vegan diets more dependent on long-distance supply chains than people assume. The war on livestock is not a war on carbon; it is a war on the most successful anti-poverty tool ever created.

And what about the animals? Remove humans tomorrow and most commercial chickens would die of exposure, merino sheep would overheat under their own wool and dairy cattle would suffer from untreated mastitis (a bacterial infection of the udder). These species are fully domesticated. Without us, they would disappear.

Net Zero 2050 is a climate target adopted by federal and provincial governments, but debates continue over whether it requires reducing livestock herds or simply improving farm practices. Net Zero advocates look at a pasture and see methane. Farmers see land producing food from nothing more than sunlight, rain and grass.

So the question is not technical. It is about how we see ourselves. Does the Net Zero vision treat humans as part of the natural world, or as a threat that must be contained by forcing diets and erasing long-standing food systems? Eliminating livestock sends the message that human presence itself is an environmental problem, not a participant in a functioning ecosystem.

The cow is not the enemy of the planet. Pasture is not a problem to fix. It is a solution our ancestors discovered long before anyone used the word “sustainable.” We abandon it at our peril and at theirs.

Dr. Joseph Fournier is a senior fellow at the Frontier Centre for Public Policy. An accomplished scientist and former energy executive, he holds graduate training in chemical physics and has written more than 100 articles on energy, environment and climate science.