Should factory farming be phased out within ten years?

Factory farming is, by the numbers, the least efficient way humans have ever produced food. The landmark Poore and Nemecek analysis found that livestock takes up 83 percent of the world's farmland while delivering just 18 percent of our calories. Our World in Data Read that again. We cleared forests the size of continents to run a system that returns less than a fifth of the calories for more than four-fifths of the land. Every argument for keeping factory farms assumes we need them to feed 10 billion people. The data says the opposite: they are the bottleneck. A ten-year phaseout is not a sacrifice of food security. It is the largest land-efficiency program available to a crowded planet, and the only thing standing in its way is an industry that profits from the waste.