What is the ideal world population?

STANFORD — Until cultures change radically, the optimum number of people to exist on the planet at any one time lies in the vicinity of 1.5 billion to 2 billion people, about a third of the present number, three California ecologists estimated in an article published in the journal Population and Environment.

The world’s current (overall as well as natural) growth rate is about 1.14%, representing a doubling time of 61 years. We can expect the world’s population of 6.5 billion to become 13 billion by 2067 if current growth continues. The world’s growth rate peaked in the 1960s at 2% and a doubling time of 35 years.

Population growth has declined mainly due to the abrupt decline in the global total fertility rate, from 5.0 in 1960 to 2.3 in 2020. The decline in the total fertility rate has occurred in every region of the world and is a result of a process known as demographic transition.

India. India is expected to overtake China as the most populous country in the world by 2100, according to the new study.

Based on this, The UN Population Division projects the world population, which is 7.8 billion as of 2020, to level out around 2100 at 10.9 billion (the median line), assuming a continuing decrease in the global average fertility rate from 2.5 births per woman during the 2015–2020 period to 1.9 in 2095–2100, according …

So it might appear that our planet may one day run out of water. Fortunately, That is not the case. Earth contains huge quantities of water in its oceans, lakes, rivers, the atmosphere, and believe it or not, in the rocks of the inner Earth.

Rapid population growth, climate change, high demand for food, manufacturing, and the economic crisis have left the world in dire shortage of a number of critical things. Some of these, like Water, soil, and antibiotics, are things we can’t live out.

Overpopulation in China began After World War II In 1949, when Chinese families were encouraged to have as many children as possible in hopes of bringing more money to the country, building a better army, and producing more food.

After the collapse of the communist bloc, and without the former Soviet republics, The population of the Russian Federation fell to 148.5 million. In 2020, it was 144.1 million, compared to 329.4 million in the United States.

Iceland Has the lowest poverty rate among OECD’s 38 member countries, Morgunblaðið reports. The poverty rate is defined by OECD as “the ratio of the number of people (in a given age group) whose income falls below the poverty line; taken as half the median household income of the total population.”

Some of the 15 countries (China, Kyrgyz Republic, Moldova, Vietnam) effectively eliminated extreme poverty by 2015. In others (e.g. India), low rates of extreme poverty in 2015 still translated to millions of people living in deprivation.

On the other side of the scale, the CIA estimates Monaco Has the lowest birth rate in the world at 6.63 average annual births per 1,000 people per year.

Rapid growth has led to Uncontrolled urbanization, which has produced overcrowding, destitution, crime, pollution, and political turmoil. Rapid growth has outstripped increases in food production, and population pressure has led to the overuse of arable land and its destruction.

Actions on the national level

1. Generously fund family planning programs.
2. Make modern contraception legal, free and available everywhere, even in remote areas.
3. Improve health care to reduce infant and child mortality.
4. Restrict child marriage and raise the legal age of marriage (minimum 18 years)

At a current 327 million people in U.S. (US Census Bureau, 2018), Overpopulation is at the core of many U.S. environmental issues. Understanding this challenge is a necessity for today’s millennials and the aging population alike.

Causes of Overpopulation are different for many countries but are mostly associated with Poverty, reduced mortality rates, poor medical access, poor contraceptive use, as well as immigration. With overpopulation comes a decrease in resources and an increase in symptoms of illness and disease.

Yes, sadly, the Earth will eventually run out of oxygen — but not for a long time. According to New Scientist, oxygen comprises about 21 percent of Earth’s atmosphere. That robust concentration allows for large and complex organisms to live and thrive on our planet.

Repopulating the world after the apocalypse

However, to retain evolutionary potential – to remain genetically flexible and diverse – the IUCN criteria suggest we would need At least 500 effective individuals. That requires a population of 2,500 to 5,000.

Projections by countries

The population may have reached 800,000 by 4000 b.c.e., 3 or 4 million By 3000 b.c.e., and 20 million by 2000 b.c.e.