![]() ![]() ![]() Īs scientists study how human population exploded, they can help humanity make better choices about family planning, consumption, habitat protection and other issues, to better preserve the Earth for future generations, the museum said. Pollution has contributed to illness and death among wildlife and even other humans, and air pollution may contribute to climate change. However, the Earth’s ecosystems are already showing the strain of supporting 7.2 billion people.Ĭonstruction of cities, expansion of industry, and even clearing land for agricultural use have reduced the number of habitats available for other animals and plants around the world, leading to species becoming endangered or extinct. Fertility rates are already falling in many countries, the museum reports. Human population growth since 1000 AD is exponential (dark blue. Scientists believe that number will begin to level off by 2100. Graph plots the world population growth from 1000 AD to the present. In just 316 years, humanity has reached more than 7 billion people worldwide. Population Estimates Unit 2008, Population Estimates for UK, England and Wales, Scotland and Northern Ireland, ISBN reference: 0116909714, Office for National. to the present day.Īs late as 1700 A.D., global population was just 590 million, but the Industrial Revolution, which brought advances in medicine, agriculture and technology, spurred growth. It also highlights occurrences that reduced the global population, such as the bubonic plague epidemic known as the Black Death.Ĭities and areas with more than 1 million residents appear and, less often, disappear from the map as the animation travels along the timeline from 1 A.D. Life expectancy at birth averaged 10 years for most of. Rome also held a census, but it returned total population figures. By 1 A.D., the population had reached 300 million, which indicates a growth rate of 0.0512 per year. Sources for the graph entitled 'World Population Growth, 1800-2050,' which appears at the end of the series, are the United Nations, World Population Prospects, The 2003 Revision, and estimates by. was 170 million today, it’s 7.2 billion, according to the museum, which worked with Population Connection, the U.N.’s World Population Prospects, Worldometers and NASA on the project.Īs it follows the population explosion, the American Museum of Natural History points out specific events that encouraged population growth, such as the advent of farming, travel and trade on the Silk Road, and the development of modern medicine. For modern societies, we can answer that question because we have census returns. ![]()
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