This lecture by the instructor covers the concept of wealth-based assessment for testing sustainability, focusing on weak and strong sustainability. It discusses indicators systems such as the SDG and planetary boundaries, as well as wealth accounting by The World Bank. The lecture explores the evolution of total wealth, shares of wealth by income group, and the use of natural capital for development. It also analyzes the convergence in the wealth of nations, the calculation of Adjusted Net Savings (ANS), and the limitations of wealth accounting. The lecture concludes with topics for potential projects related to the World Bank's Changing Wealth of Nations report.