This book is a science roadmap for food and agriculture system to render India hunger free, more equitable, prosperous and evergreen. Underpinning the centrality of agriculture in achieving comprehensive and sustained livelihood security in India, it is envisioned that science and technology couched in effective policy regimes will render India zero hunger and less unequal. Internalizing these profound pronouncements, the book is a saga of generation, growth, development and application of agricultural sciences, technologies and innovations during the past 100 years for dynamically transforming Indian Agriculture towards meeting the changing societal needs and priorities and to address ever-evolving and intensifying challenges of comprehensive food, nutrition, ecological and livelihood security.