Book excerpt: Recent years have seen an increase in discussion around the impact of our dietary choices not only on personal health, but on global issues such as food security and climate change. Much focus has been placed on eating a plant-based diet and eschewing animal-sourced foods, with vegetarian and vegan options becoming far more abundant across grocery stores and in restaurants. But as we look to the future, what other sources and types of food could help foster health for both people and the planet?