The School of Economics at the University of Sydney provides undergraduate training in theoretical and applied aspects of modern economics, econometrics, and financial economics. It is one of the most successful programs of its type in Australia and a leading supplier of graduates to the private and public sectors. Although primarily interested in explaining the behaviour of individuals, economics also addresses the collective behaviour of businesses and industries, governments and countries, and the globe as a whole. As such, economics is crucial to understanding and solving the major problems and challenges facing the world today, such as global warming, poverty, development, and recession. Economics is also important for business and how they interact in the marketplace.