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Explore the theoretical foundations and real-world applications of externalities in this economics lecture from MIT's Public Finance and Public Policy course. Examine how market failures occur when individual actions create costs or benefits for others that aren't reflected in market prices, using climate change and forest fires as compelling case studies. Learn to analyze the economic mechanisms behind environmental challenges and understand how externalities affect resource allocation and social welfare. Discover the policy tools economists use to address these market failures, including taxes, subsidies, and regulatory approaches. Gain insights into how theoretical economic concepts apply to pressing contemporary issues like environmental degradation and natural disasters, building upon foundational externality theory to understand complex policy challenges facing governments today.
