Itll take some creative solutions to figure out a way to feed the world going forward, and while modern science is all about genetic modifications, Soylent Green proposed something a little more radical.This hunt for a sustainable food source is a major source of strife in the film, and has led people to abandon traditional ideas of meals and instead focus on eating nutrientrich wafers made from plankton Or is it plankton?This is a film that tackles class divides, environmental concerns, and food shortages. Its a horrible vision for the world, and one relevant to todays worries.