Global demography refers to the study of the size, structure, and distribution of the worlds population. It is a branch of demography that focuses on the analysis of population trends and patterns across different regions and countries, and their social, economic, and political implications. Some key trends in global demography include:

• Population growth: The worlds population is currently growing at a rate of 76 million people per year, and is projected to reach 9.7 billion by 2050. This growth is primarily driven by high fertility rates in developing countries, as well as longer life expectancies due to improved healthcare and living standards.

• Aging population: As life expectancies increase, the proportion of older people in the population is growing, while the proportion of children is declining. This demographic shift has important implications for healthcare, social security, and economic growth.

• Regional disparities: While the population is growing in many parts of the world, there are also significant regional disparities. For example, Africa is projected to experience the largest population growth in the coming decades, while the population of developed countries is expected to remain steady or decline.

Global demography is important because it helps us understand the changing nature of the worlds population and the challenges and opportunities that come with it. By analyzing population trends and patterns, policymakers can make informed decisions about issues such as healthcare, education, and economic development.