Jon Betz and Taggart Siegel’s documentary makes the case that we often ignore — at our peril — the obvious. Consider the lowly seed, which gets a fraction of the attention we lavish on food, and yet without seeds, there is literally no food. And alarmingly, a good deal of earth’s seeds have already disappeared; generally, we cultivate very few, and with an eye toward large-scale commercial crops. Even those that do remain run the risk of being genetically modified and turned into a patented product. The doc, which travels the world from New Mexico to Old Mexico, as well as Hawaii and India, provides a good primer on why seeds matter, and a wake-up call to not take them for granted.