World population to hit 8 billion this year: UN
Pakistan, India, 6 other countries may add to global population rise in decades to come
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That overall population milestone "is a reminder of our shared responsibility to care for our planet and a moment to reflect on where we still fall short of our commitments to one another," Secretary General Antonio Guterres said, without citing specifics.
"This is an occasion to celebrate our diversity, recognize our common humanity, and marvel at advancements in health that have extended lifespans and dramatically reduced maternal and child mortality rates," he added.
The forecast by the UN Department of Economic and Social Affairs said the world's population is growing at its slowest pace since 1950.
It should hit 8.5 billion in 2030 and 9.7 billion in 2050, peaking at around 10.4 billion people in the 2080s before steadying at that level until 2100.
While a net drop in birth rates is observed in several developing countries, more than half of the rise forecast in the world's population in the coming decades will be concentrated in eight countries, the report said.