You’d think we’d already know everything we need to about a crop that’s been cultivated by humans since ancient Egyptian times. But that didn’t stop Sean Foster from trying to figure out how to grow a better head of lettuce. For his thesis project, Foster, an agriculture grad student, took over the lab at Cal Poly’s BioResource and Agricultural Engineering (BRAE) Department to discover how lettuce and other greens grew under different light conditions and far from a more traditional soil-bound setting. On the day he recruited a team of undergrads to assist with harvesting the fruits (vegetables?) of his labor, he took us on a tour of his project.