Food supply would certainly be one of the most important things to consider in any sustainable life support system destined for long duration space flights or future space habitation plans. Future life-support technologies for Mars missions and beyond hinge upon the ability to regenerate food products, a major hurdle which has so far not been surmounted with current technologies due to concomitants increase in contaminant loads. Current missions to the International Space Station seek to find new ways to grow or create food in space.
Even though this has not yet been accomplished, food supply technologies have dramatically increased since the first space missions. Check out this great infographic, designed by Labeley.com, detailing the evolution of food supply in space.
Featured image: NASA/Scott Kelly