the world population is expected to reach 8 billion by the end of the century.
the world population is expected to reach 8 billion by the end of the century.
when is the world population expected to reach 8 billion?
by the end of the century
according to current projections, the global population will reach eight billion by 2024, and is likely to reach around nine billion by 2042. alternative scenarios for 2050 range from a low of 7.4 billion to a high of more than 10.6 billion. projected figures vary depending on underlying statistical assumptions and the variables used in projection calculations, especially the fertility variable. long-range predictions to 2150 range from a population decline to 3.2 billion in the "low scenario", to "high scenarios" of 24.8 billion. one extreme scenario predicted a massive increase to 256 billion by 2150, assuming the global fertility rate remained at its 1995 level of 3.04 children per woman; however, by 2010 the global fertility rate had declined to 2.52.
world population
according to the most recent (july 2015) revision of the official united nations world population prospects, the world population is projected to reach 8.5 billion by 2030, up from the current 7.3 billion (july 2015), to exceed 9 billion people by 2050, and to reach 11.2 billion by the year 2100. most of the increase will be in developing countries whose population is projected to rise from 5.6 billion in 2009 to 7.9 billion in 2050. this increase will be distributed among the population aged 15–59 (1.2 billion) and 60 or over (1.1 billion) because the number of children under age 15 in developing countries is predicted to decrease. in contrast, the population of the more developed regions is expected to undergo only slight increase from 1.23 billion to 1.28 billion, and this would have declined to 1.15 billion but for a projected net migration from developing to developed countries, which is expected to average 2.4 million persons annually from 2009 to 2050. long-term estimates in 2004 of global population suggest a peak at around 2070 of nine to ten billion people, and then a slow decrease to 8.4 billion by 2100.
sustainability