Space: the final frontier! Or so the TV show says. But before that becomes a full fledged reality, we humans first need to solve a few puzzles, one of which is how to sustain life on prolonged journeys and expeditions. And part of that means having to grow your own food. Last August, astronauts on the International Space Station tasted the almost literal first fruits of their labors of growing vegetables, particularly lettuce in outer space. Now NASA has released a short clip that reveals some insights on the process.