> animals are simply too efficient at converting what we can grow everywhere but can't eat ... Simply, an exclusively plant based diet would require the elimi

> animals are simply too efficient at converting what we can grow everywhere but can't eat ... Simply, an exclusively plant based diet would require the elimination (by starvation?) of who knows, 90% of the world population? "Half of the world’s habitable land is used for agriculture, with most of this used to raise livestock for dairy and meat. Livestock are fed from two sources – lands on which the animals graze and land on which feeding crops, such as soy and cereals, are grown. How much would our agricultural land use decline if the world adopted a plant-based diet? Research suggests that if everyone shifted to a plant-based diet we would reduce global land use for agriculture by 75%. This large reduction of agricultural land use would be possible thanks to a reduction in land used for grazing and a smaller need for land to grow crops. ... In the charts here we see the energy and protein efficiency of different animal products. This tells us what percentage of the calories or grams of protein that we feed livestock are later available to consume as meat and dairy. As an example: beef has an energy efficiency of about 2%. This means that for every 100 kilocalories you feed a cow, you only get 2 kilocalories of beef back. In general we see that cows are the least efficient, followed by lamb, pigs then poultry." https://ourworldindata.org/land-use-diets https://ourworldindata.org/land-use-diets