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Meat production is about 10 times more water-intensive than plant-based calories and proteins, with one kilogram of beef, for example, requiring 15,415 liters of water.Livestock production causes almost 14.5 percent of global greenhouse-gas emissions and contributes significantly to water pollution.Moreover, livestock production consumes one-third of the total water resources used in agriculture (which accounts for 71 percent of the world's water consumption), as well as more than 40 percent of the global output of wheat, rye, oats and corn. The demand for meat is projected to increase by 50 percent from 2013 to 2025, with overall consumption still rising in the West and soaring in the developing world, especially in Asia.In order to meet this demand, meat producers have had to adopt an extremely problematic approach to raising livestock. According to recent research, if the world stopped producing crops for animal feed or diverting them to biofuels, it could not only end global hunger, but also feed 4 billion extra people – more than the number of projected arrivals before the global population stabilizes.Indeed, beef production requires, on average, 28 times more land and 11 times more water than the other livestock categories, while producing five times more greenhouse-gas emissions and six times more reactive nitrogen.
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