Economist: If everyone were a miserable vegan, only a quarter of current farmland would be needed
The Economist: Here's the suggestion: "Some may worry about the cultural impact. Eliminating meat production would change landscapes, ways of life and relationships with animals and food shaped over millennia—and parts of economies linked to them, including tourism. But such concerns do not apply as readily to land cleared to produce ever more burgers to be consumed thousands of miles away. A wholescale shift to veganism is unlikely. But these models suggest a little more “veganuary” spirit all year round would be a good thing."
Here's the visual counter-point: