Hydroponics is probably an answer. Controls for water loss and more importantly - contamination. If people going to jump onto longevity bandwagon like Bryan Joh

Hydroponics is probably an answer. Controls for water loss and more importantly - contamination. If people going to jump onto longevity bandwagon like Bryan Johnson we’ll want to minimise heavy metal contamination. And if population stops growing we’ll need to live (and work) far longer to sustain our quality of life.