The world population will reach 9.9 billion in 2050, up 33 percent from an estimated 7.4 billion now, according to projections included in the latest World Population Data Sheet from the Population Reference Bureau (PRB).
The world population would hit the 10 billion mark in 2053 if the assumptions underlying PRB's 2050 projections are applied to subsequent years.
This image shows the countries that will post the most significant population declines by volume between 2016 and 2050.
Credit: @ 2016 Population Reference Bureau
"Despite declines in fertility rates around the world, we expect population gains to remain strong enough to take us toward a global population of 10 billion," said Jeffrey Jordan, president and CEO of PRB. "Significant regional differences remain, though. For example very low birth rates in Europe will mean population declines there while Africa's population is expected to double."
PRB's projections show Africa's population will reach 2.5 billion by 2050, while the number of people in the Americas will rise by only 223 million to 1.2 billion. Asia will gain about 900 million to 5.3 billion, while Europe registers a decline from 740 million to 728 million. Oceania (which includes Australia and New Zealand) would rise from 40 million to 66 million.
PRB's widely referenced Data Sheet has been produced annually since 1962. This year's edition provides the latest data on 19 key population, health, and environment indicators for the world, major regions, and more than 200 countries. PRB also added six indicators and analytical graphics that explore the balance between providing for human needs and sustainably managing the natural resources on which people depend.
The Data Sheet's midcentury population projections indicate that:
According to the Data Sheet's estimates of current population:
Human Needs, Sustainable Resources
As part of this year's Data Sheet theme, "Human Needs and Sustainable Resources," PRB compiled statistics that speak to the environmental and resource aspects of human development. The Data Sheet included measures of carbon emissions (related to climate change), access to electricity, power from renewable energy resources, how much land countries have set aside for protection, and population per square kilometer of arable land. A few key figures include:
PRB informs people around the world about population, health, and the environment, and empowers them to use that information to advance the well-being of current and future generations. The World Population Data Sheet is one of many PRB informational products that make evidence-based knowledge easily accessible to the general public and a range of policy stakeholders. Find out more at http://www.
Peter Goldstein | idw - Informationsdienst Wissenschaft
Polluted air may pollute our morality
08.02.2018 | Association for Psychological Science
Sibling differences: Later-borns choose less prestigious programs at university
14.11.2017 | Max-Planck-Institut für demografische Forschung
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
20.02.2018 | Life Sciences
20.02.2018 | Medical Engineering
20.02.2018 | Physics and Astronomy