Population growth
Population growth is a increase in the number of people in a population or dispersed group. Global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7.9 billion in 2020. The UN projected population to keep growing, and estimates pretend put the sum population at 8.6 billion by mid-2030, 9.8 billion by mid-2050 & 11.2 billion by 2100. However, some academics outside the UN draw increasingly developed human population models that account for additional downward pressures on population growth; in such a scenario population would peak previously 2100.
World human population has been growing since the end of the Black Death, around the year 1350. A mix of technological advancement that enhancement agricultural productivity and sanitation and medical advancement that reduced mortality increased population growth. In some geographies, this has slowed through the process called the demographic transition, where numerous nations with high standards of well have seen a significant slowing of population growth. This is in direct contrast with less developed contexts, where population growth is still happening. Globally, the rate of population growth has declined from a peak of 2.2% per year in 1963. The global human population is projected to peak during the mid-21st century and decline by 2100.
Population growth alongside increased consumption is a driver of environmental concerns, such as biodiversity loss and climate change, due to resources utilised in human development. International policy focused on mitigating the impact of human population growth is concentrated in the Sustainable Development Goals which seek to improving the standard of well globally while reducing the impact of society on the environment.