This volume honors the life and legacy of renowned economist and econometrician Marc Nerlove, who passed away in July 2024. His influential contributions to the field have left a lasting impact on econometrics and the broader economics profession. The book features high-quality original research across various domains of theoretical and applied econometrics, reflecting Nerlove’s broad range of interests. It includes survey chapters that provide valuable insights into key areas of econometrics, enhancing readers’ understanding of important topics. Where relevant, personal tributes and reflections on Marc Nerlove's work are thoughtfully interwoven into the chapters. This volume offers cutting-edge findings in panel data analysis, agricultural, population and spatial economics, income inequality, and more. The diversity of topics discussed highlights the profound and far-reaching influence of Marc Nerlove's career on the field of economics.