Fish farms promise to grow massive amounts of seafood to feed a hungry planet, and to do it ethically. But what’s good for the humans isn’t always good for the salmon.This episode was produced by Avishay Artsy, edited by Miranda Kennedy, fact-checked by Kelli Wessinger and Laura Bullard, engineered by David Tatasciore, and hosted by Noel King.The seafood counter at a Ralphs grocery store in Los Angeles. Photo by Avishay Artsy/Vox.Listen to Today, Explained ad-free by becoming a Vox Member: vox.com/members. New Vox members get $20 off their membership right now. Transcript at ⁠vox.com/today-explained-podcast.⁠ Learn more about your ad choices. Visit podcastchoices.com/adchoices