Take a look at pictures of actual vertical farms vs. artist concepts and compare their use of natural light and then tell me if this is truly as "sustainable" a

Take a look at pictures of actual vertical farms vs. artist concepts and compare their use of natural light and then tell me if this is truly as "sustainable" as they say. Growing things is more than getting the soil right. It's (for most plants) the use of chlorophyll to make sugars which (again for most plants) is harnessing the equivalent of sunlight. Aquaponics are definitely sustainable and just downright awesome and we should invest more in them, but without sunlight you're just running a power hungry "grow op".