The author team is pleased to welcome Sean M. Flynn to the Eighteenth Edition. Sean shares our dedication to making economics accessible to all, contributing to our goal of fostering lasting student interest in the subject. The latest edition includes enhanced foundational strengths such as logical organization, clear exposition, and step-by-step analysis, along with new discussions on topics like behavioral economics and climate change policies. Additionally, there are new chapters on natural resource economics and financial economics, as well as innovative macro analysis focusing on expectations and price stickiness over time. Optional material on supply, demand, and game theory is also included.