Environmental effects of meat production

The use of large industrial monoculture that is common in industrialized agriculture, typically for feed crops such as corn and soy is more damaging to ecosystems than more sustainable farming practices such as organic farming, permaculture, arable, pastoral, and rain-fed agriculture[citation needed.

According to a 2006 United Nations initiative, the livestock industry is one of the largest contributors to environmental degradation worldwide, and modern practices of raising animals for food contributes on a "massive scale" to deforestation, air and water pollution, land degradation, loss of topsoil, climate change,[4] the overuse of resources including oil and water, and loss of biodiversity. The initiative 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." In 2006 FAO estimated that meat industry contributes 18% of all emissions of greenhouse gases. This figure was revised in 2009 by two World Bank scientists and estimated at 51% minimum.
The International Resource Panel's Priority Products and Materials report, published in 2010, found that animal products caused more damage than producing construction minerals such as sand or cement, plastics or metals. Currently, more than half the world's crops are used to feed animals. In America, more than one-third of the fossil fuels produced are used to raise animals for food.The authors explained that Western dietary preferences for meat would be unsustainable as the world population rose to the forecast 9.1 billion by 2050. Demand for meat is expected to double by this date; meat consumption is steadily rising in countries such as China that once followed more sustainable, vegetable-based diets. The authors concluded that a global shift towards a vegan diet was vital to save the world from hunger, fuel poverty and the worst impacts of climate change.