' Wrote:Sunlight still only covers a plane; you don't measure arable land in volume, but in surface area that can be pointed at the sun. A thin cylinder of radius r and a hemisphere of radius r have exactly the same amount of real estate that you can park crops on.
In this time and space, I propose the solution of mirrors.
Failing this simplistic measure to increase crop growth in terms of speed and size, I propose artificial lighting, which allows photosynthesis.