A much more detailed description can be found on the related opinion piece here: https://www.theguardian.com/commentisfree/2018/oct/31/electric-food-sci-fi-diet

A much more detailed description can be found on the related opinion piece here: https://www.theguardian.com/commentisfree/2018/oct/31/electric-food-sci-fi-diet-planet-food-animals-environment https://www.theguardian.com/commentisfree/2018/oct/31/electr... The process involves using microbes seeded with a bunch of minerals in addition to the air, water, and electricity, so this headline oversimplifies things quite a bit. Meanwhile the opinion piece also makes the case for why anyone should care: in short, figuring out ways to grow food in radically less space - and in particular, using barren land (the article says sunny deserts would be ideal for this method) - is key to reversing significant environmental harm done by industrial agriculture. ^ that’s a summary of the opinion piece, I don’t have a lot of knowledge or opinion in this area.