The document discusses open science approaches for addressing challenges in the global food system. It identifies three key components of the food system - smart farming, food security and the environment; gene-based approaches from omics to landscape; and food safety, nutrition and health. For each component, it outlines societal and scientific challenges, as well as obstacles and expectations for developing open science solutions. An example case study on global agricultural monitoring is also provided. The document argues that developing open science for food systems requires efforts to share data and resources, connect through standards and best practices, and enable broader collaboration across disciplines and sectors.