This course develops theoretical and empirical tools for understanding the macroeconomy. An emphasis is placed on reconciling various macroeconomic models with the "stylized facts" of the data. The course begins with the study of long-run economic growth, both over time and across countries. Attention is then given to modern approaches to consumption, investment, international transactions, money demand, and labor markets. These are distilled into simple general equilibrium models, with Neo-Classical and (New) Keynesian variants. Critiques of both schools of thought are explored. Finally, the efficacy of countercyclical policy actions is examined in detail.