Worldwide, the future of us the differences are much greater. One of the most densely populated are

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According to the UN, the Earth will continue this year, the home of 7 billion people. By 2100 we will have three billion more. According to American demographer Carl bonnet on Earth today lived up to 108 billion people.
In 1987, precisely the future of us on 11 July, is considered the world's population of five billion people. Organization of the United Nations (UN) has declared two years later on July 11 World Population Day - with the aim of each year to highlight the important issues related to population.
He currently lives in each km 2 of land 51 people, but the population density in the world is very different. The most densely populated continent is Asia (130 inhabitants per km 2), the least densely Oceania (4 people per km 2).
In general, the most densely populated "city-state" and micro high degree of urbanization in a very small area. The least densely populated areas unsuitable for permanent settlement, for example. deserts, tundra, mountains. Similarly differ densely populated urban centers of more sparsely populated the future of us rural areas. Examples are not far away: one 2 km Ljubljana live an average of 1,662 inhabitants in the neighboring village Janče per km 2 area of less than 2 head.
Worldwide, the future of us the differences are much greater. One of the most densely populated areas in Monaco, namely live there per km 2 area of nearly 36,000 people. Among the most sparsely the future of us populated countries, Mongolia, the future of us outside the capital city live an average of only one person per km 2.
If the population in the coming decades greatly increased, it is expected by the population, especially the future of us in large cities in developing countries even stronger today as a thickener. Today, cities with more than 10 million inhabitants, about 20 in 2050 will be much more. In the last 60 years, for example. Dake number of people in Bangladesh and Kinshasa in the Democratic Republic of Congo has increased by nine times; but you can expect that in the future due to the growing number of inhabitants and the lack of arable land in the countryside immigrated to the city even more people, so they are also the spatial spread.
Since 1960, the world population has more than doubled, but the growth was geographically very uneven: the population of Slovenia, for example, has increased by almost a third, while the population of Ivory Coast have risen by more than 500%. Number of people in Europe the future of us in the last 50 years has increased by a fifth in North and Central America has doubled in Asia and South America has more than doubled in Africa and Oceania tripled.
According to UN projections, the population by 2100, thanks to increased most in countries with very high fertility rates; there is now every woman gives birth to an average of more than 1.5 girls (58 countries, of which two-thirds the future of us in Africa). In these countries the population will be over the next 90 years more than tripled (from 1.2 billion to 4.2 billion). In countries with low fertility, in which each woman gives birth to 1.6 children on average (Europe except Iceland and Ireland, 19 Asian, 14 American, two African, Australia), the population fell by about a fifth to 2.4 billion . In countries with medium fertility rates will by 2100 the population increased by 26% to 3.5bn.
Every year, 140 million children the future of us are born, 57 million people die. The UN population projections for all countries provided for the extension of life expectancy at birth (lower mortality) expectations the future of us regarding fertility differ.
In countries with high birth rates for the next 90 years a significant decline in fertility to 4.5 live births per woman to 2.1 children. If not decline, the future of us the population in these countries increased fivefold by 2100.
Approximately the same reduction is also provided for countries with medium fertility (1.9 children per woman in 2100). In these countries, the birth rate of the '60s have declined significantly (from 5.3 to 2.6 children per woman). If there will be no reduction in fertility rates below the level of simple reproduction (2.1 children per woman), the population of these countries by 2100. doubles. the future of us
In countries with low fertility rates are projected to increase slowly the UN and by 2100 increased to 2.0 children per woman. If fertility rates in these countries remain the future of us as low as it is today (an average of 1.6 children per woman) would lead to a more rapid decline in population and a much more significant aging of the population.
Because natural resources are limited, the increase in population will nearly impossible to meet the most basic human needs for space, food and drinking water. Is it possible sustainable (long-term) increase food production is a particular challenge,