In 2011, I moved from the lush greenery of Olympia, an hour south of Seattle, to Philadelphia, one of the densest cities in America. Never in my life had I seen so much brick, so much pavement, and so little green space. I loved the city—I moved there to pursue opportunities that weren’t available in a smaller town. But I missed the green. And something about that made me suddenly interested in healthy eating. If I couldn’t have much green foliage around me, at least I could have some on my plate.