Seven Billion

With 267 people being born every minute and 108 dying, the world’s population will top seven billion next year, a research group projects, while the ratio of working-age adults to support the elderly in developed countries declines precipitously because of lower birthrates and longer life spans.

In a sobering assessment of those two trends, William P. Butz, president of the Population Reference Bureau, said that “chronically low birthrates in developed countries are beginning to challenge the health and financial security of the elderly” at the same time that “developing countries are adding over 80 million to the population each year and the poorest of those countries are adding 20 million, exacerbating poverty and threatening the environment.”

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I remember the population as four billion when I was growing up. I wonder how fast the population is growing. Enter wikipedia.

The population of the world reached one billion in 1804, two billion in 1927, three billion in 1960, four billion in 1974, five billion in 1987, and six billion in 1999. It is projected to reach seven billion by late 2011, and around eight billion by 2025.

By 2045-2050, the world's population is currently projected to reach around nine billion, with alternative scenarios ranging from 7.4 billion to 10.6 billion. Projected figures vary depending on such things as the underlying assumptions and which variables are manipulated in projection calculations, especially the fertility variable. Such variations give long-range predictions to 2150, ranging from population decline to 3.2 billion in the 'low scenario', to high scenarios of 24.8 billion, or soaring to 256 billion.