Book excerpt: Agriculture is one of the oldest and most global human enterprises, and as the world struggles with sustainable practices and policies, agricultural chemistry has a clear role to play. This book highlights the ways in which science in agriculture is helping to achieve global sustainability in the twenty- first century, and demonstrates that this science can and should be a leading contributor in discussions on environmental science and chemistry. The four drivers of this subject are presented, those being economic, environmental, regulatory and scientific, and help showcase agricultural chemistry as a dynamic subject that is contributing to this necessity of global sustainability in the twenty-first century. Features: Explains the necessary role of agricultural chemistry in the sustainability of the world in the 21st century Recognizes past practices and future potential, guided by global demand and the four drivers: economic, scientific, regulatory and environmental Presents a much needed multi-dimensional approach to the subject Demonstrates that agricultural chemistries can and should be leading contributors in discussion on environmental science and chemistry Highlights new products, processes, applications and developments in green chemistry, which demonstrates how agriculture is adapting in the new age