It’s pretty massive. According to National Geographic, only 55% of the world’s crop calories are consumed directly by people. Fully 36% of the world’s crop calories are used for animal feed. And since it takes 100 calories of grain to produce 12 calories of chicken, or 3 calories of beef, that’s not very efficient.
Here’s what it looks like:
With the global population expected to hit 9 billion by 2050, we have a very simple choice: we can destroy more forests and natural landscapes and put it to the plow or use it for grazing, or we can eat less meat. A lot less meat. And that doesn’t even account for the climate change impact of meat.