LetsGetRowdy
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The world's population will reach the seven-billion mark on Oct 31, according to projections by the UN. It's a milestone, but also a wake-up call, a call to action. This special coverage introduces the basic facts about populous countries, challenges and problems caused by the spikes in human population.
The United Nations Population Fund predicts not only that the planet's population will reach 7 billion by Oct 31, but another billion will be here by 2025, and the total will reach 10 billion before the end of the century.
According to demographers, the world's population didn't reach 1 billion until 1804, and it took 123 years to hit the 2 billion mark in 1927. Then the pace accelerated 3 billion in 1959, 4 billion in 1974, 5 billion in 1987, 6 billion in 1998.
"The constraints of the biosphere are fixed," Harvard University sociobiologist Edward O. Wilson wrote in his 2002 book, "The Future of Life."
Wilson predicted the Earth's resources could be stretched to support a population of 10 billion, just about where UN population estimators say growth will level out by the end of the century.
World population hits 7 billion | Asia-Pacific
The United Nations Population Fund predicts not only that the planet's population will reach 7 billion by Oct 31, but another billion will be here by 2025, and the total will reach 10 billion before the end of the century.
According to demographers, the world's population didn't reach 1 billion until 1804, and it took 123 years to hit the 2 billion mark in 1927. Then the pace accelerated 3 billion in 1959, 4 billion in 1974, 5 billion in 1987, 6 billion in 1998.
"The constraints of the biosphere are fixed," Harvard University sociobiologist Edward O. Wilson wrote in his 2002 book, "The Future of Life."
Wilson predicted the Earth's resources could be stretched to support a population of 10 billion, just about where UN population estimators say growth will level out by the end of the century.
World population hits 7 billion | Asia-Pacific