Book excerpt: This book discusses agricultural diversification, nutritional security and environmental sustainability. It helps to address the multipronged challenges of nutritional security while preserving the dwindling natural resources in the current fluctuating climate conditions. Energy-intensive, conventional agricultural production systems accelerate environmental footprints, resource mining, biodiversity losses, and human health problems and reduce soil functionality. Diversified farming can potentially enhance yield, food security, and climate change buffering as it helps to achieve advanced food security by efficient resource use and profit maximization. This book covers the challenges faced during the adoption of diversified farming and opportunities to enhanced food production and minimize the environmental footprints. This book is useful for academicians, researchers, ecologists, environmentalists, students, capacity builders, and policymakers to have in-depth knowledge of this complex and diverse field. This book also helps in devising a road map for policy planning and advancement of existing knowledge for various stakeholders working in this field.