Chris Packham presented a BBC Horizon documentary 7.7 Billion People and Countingon the consequences of the rise in population.
About a quarter of schools in southwest Scotland are operating at less than 50 per cent capacity, figures have revealed. School rolls are falling in Dumfries and Galloway, which has experienced one of the highest rates of population decline in Scotland. A report to the council’s education and learning committee showed that about 6,000 more people died in the region than were born in the decade to 2018, causing the population to fall by 1.5 per cent.
Populations are already falling in many countries. In rich countries, fertility rates have hovered below replacement levels of 2.1 children per woman for decades, but they are now below that threshold in middle-income countries across the world, from Iran to Thailand to Brazil. In South Korea, the fertility rate dipped to just 0.98 last year, and even in the US it hit an all-time low of 1.73 births per woman.Given parental desire to invest in each child, a fertility surge in rich countries is improbable. According to the latest World Population Prospects from the UN, 27 countries have fewer people now than in 2010, and it expects 55 nations — including China — to experience declines between now and 2050. In the 21st century, falling populations will become normal.
9 million at the end of the 1980sfell fastest shrinking population1.1 million Bulgarians estimated to live abroad
Thailand's latest population projections show the country is poised to undergo a shift that could soon create a worker shortage. The country is ageing at one of the fastest rates in the developing world.The forecast suggests Thailand's population will continue to increase until 2028, before starting to decline.Jinanggoon Rojananan, deputy secretary general of the National Economic and Social Development Council said: "Fewer children are being born, and the fertility rate is consistently declining. In studying different countries, we haven't seen any successful method to boost the birth rate, yet." In just 20 years, senior citizens are expected to make up about one-third of Thailand's population. At the same time, the working-age population will decrease from 65 percent to 56 percent. That statistic is raising concerns about the future of Thailand's manufacturing industry."In the near future, we need to improve production methods by adopting new technologies and innovations," Jinanggoon said. "That's the only way to boost the national income level enough to support the population."
Andrej Plenkovic said. Croatia – which has a population of just 4.2 million – since it joined the EU. The World Bank projects the population to decline to 3.46 million by 2050. The EU estimates that 15 per cent of working-age Croats live in other EU countries, the second-highest such percentage in the union after Romania. The birth rate at 1.44 children per woman is 10 per cent below the EU average and close to one-third less than the natural replacement rate of 2.1 that countries need to hold their populations stable.
US-based academic Yi Fuxian, senior scientist at the University of Wisconsin-Madison, believes that China's population is over-estimated, and according to his work, the real population "began to decline in 2018"
Its2.2 replacement level (2.1)