From Wikipedia, the free encyclopedia
The world population is the total number of living humans on the planet Earth. As of today, it is estimated to be 6.974 billion by the United States Census Bureau. According to a separate estimate by the United Nations, it has already exceeded 7 billion.
World population estimates from 1800 to 2100, based on UN 2004 projections (red, orange, green) and US Census Bureau historical estimates (black).
The world population has experienced continuous growth since the end of the Great Famine and Black Death in 1350, when it stood at around 370 million.The highest rates of growth—increases above 1.8% per year—were seen briefly during the 1950s, and for a longer period during the 1960s and 1970s. The growth rate peaked at 2.2% in 1963, and had declined to 1.1% by 2009. Annual births peaked at 173 million in the late 1990s, and are now expected to remain constant at their 2011 level of 134 million, while deaths number 56 million per year, and are expected to increase to 80 million per year by 2040. Current projections show a continued increase in population (but a steady decline in the population growth rate), with the global population expected to reach between 7.5 and 10.5 billion by 2050.
A world of 7 billion people poses many challenges, and countless opportunities to make a positive difference.
7 Billion Actions, established by the United Nations Population Fund, inspires change that will make a difference by highlighting positive action by individuals and organizations around the world. Everyone has an opportunity and a responsibility to make a world of 7 billion a better place for all of us. Share your story of how you're making a difference, and inspire others to take action.
7 Billion Actions, established by the United Nations Population Fund, inspires change that will make a difference by highlighting positive action by individuals and organizations around the world. Everyone has an opportunity and a responsibility to make a world of 7 billion a better place for all of us. Share your story of how you're making a difference, and inspire others to take action.
in http://ngm.nationalgeographic.com/7-billion
For more detailed information go to these sites:
http://www.usatoday.com/news/world/story/2011-10-30/world-population-hits-seven-billion/51007670/1
http://www.bbc.co.uk/news/magazine-15449959
Watch these videos and think about the measures that must be taken in order to tackle this world probem.
http://youtu.be/4B2xOvKFFz4
http://youtu.be/sc4HxPxNrZ0
