George Monbiot refutes the absurd vision of returning to a preindustrial style of agriculture. It could not possibly feed the people who live our cities today, and didn't feed most people adequately when it was the norm.

He suggests that we produce food more efficiently using one-celled life. That might be adequate when we get really good of engineering it to resemble the diverse foods we eat today -- at which point it will be another name for culturing meat without growing entire animals.

Having fewer babies is a crucial part of addressing the difficulty of feeding the human population of the 22nd century, supposing we prevent the gruesome gigadeaths that climate breakdown threatens in this century.