The growth of the world's population is one of the most important indicators of the development of human civilization. It reflects not only the biological ability of humans to reproduce but also the level of technology, medicine, culture, and the economy. The question of when the Earth will welcome its tenth billionth inhabitant has been concerning demographers, ecologists, and economists for decades. This milestone has become a symbolic benchmark indicating the limits of the planet's capabilities and the need to reconsider our views on the future of humanity. Historical dynamics of population growth To understand the prospects, it is worth looking at history. For most of the existence of Homo sapiens, the number of people remained almost unchanged. Until the beginning of the Neolithic Revolution, when agriculture and animal husbandry appeared, the world's population did not exceed several million. A sharp increase began about ten thousand years ago, when humans learned to manage natural resources. The first billion was reached only in the early 19th century — around 1804. The second appeared less than 130 years later, and the third in the mid-20th century. From that moment on, the demographic curve became almost exponential. Over the following decades, humanity added about a billion every 12 years. In November 2022, the world's population officially reached 8 billion. This fact has sparked new discussions about the pace of growth and how many people the planet can feed. Demographers' forecasts and key trends According to the UN and leading demographic institutions, the world's population will continue to grow, but the rate of increase will gradually slow down. The main reason is the change in fertility models and the aging population. Today, in most developed countries, fertility is below the replacement level. In Europe, Japan, and South Korea, the number of children per woman is consistently below two, indicating a gradual population decline. At the same time, gr ... Read more