THIS ARTICLE IS republished from The Conversation under a Creative Commons license.
Humans have long wrestled with their conscience about killing and eating animals. The “meat paradox” (the conflict between people’s preference for meat and their concern for animals) may have inspired cave paintings from 37,000 years ago. Since then, many leading thinkers have eschewed meat, including Pythagoras, Leonardo da Vinci, Mary Shelley, and Mahatma Gandhi.
Today, half of US adults and three-quarters of UK adults oppose the factory farming that