From the article: "In addition to the mobility of indoor farms, vertical farming has the capacity to grow food with 95% less water and 97% less land, according to the USDA"
We can drop water requirements up to 99% for some crops versus traditional land farming using hydroponics. You get a sealed environment where water doesn't just get lost.
The same way every hydroponic system saves water. Recirculation.
Traditional soil growing literally pours the water on the ground, where most of it evaporates, and what doesn’t sinks into the soil and becomes unrecoverable on any reasonable timescale.
