See main article: Population decline and Sub-replacement fertility.
Birth dearth was coined by Ben J. Wattenberg in his 1987 book Birth Dearth. This term refers to the declining fertility rates observed in many modern industrialized nations. It is often cited as a response to overpopulation. Countries and geographic regions that are currently experiencing declining populations include Europe, Russia, South Korea, and Spain. Populations of people of these descents in other countries, such as the United States, are also being impacted.
Russia is often mentioned in articles concerning birth dearth because of its rapidly declining population and the proposal by Vladimir Putin to offer women additional benefits for having more children. Should current trends continue, Russia's population will be an estimated 111 million in 2050, compared with 147 million in 2000, according to the United Nations World Population Prospects report (2004 Revision, medium variant).
See main article: Aging of Europe. Europe is one of the major geographic regions expected to decline in population in the coming years. Europe's population is forecast to decline by nearly 70 million people by 2050,[1] as the total fertility rate has remained perpetually below the replacement rate.[2] (Further information: Sub-replacement fertility and Population decline)