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12,000 years ago, we were all hunter-gatherers. The population at that time has been estimated to be probably less than ten million human beings.[1] A single major city such as Tokyo, Beijing, Seoul, Karachi, Mexico City, Lagos, Mumbai or Cairo now has more inhabitants than all the continents combined back then.
With the Neolithic Revolution and the beginning of agriculture, the number of humans grew gradually for thousands of years. In the last couple of centuries, after the Industrial Revolution and the birth of modern medicine, the global population has virtually exploded. It is now almost eight times larger than it was in the year 1800.
Overpopulation is one of the greatest problems facing our planet. It has a negative effect on the lives of many humans and causes very serious environmental problems. Quite a few animals have been pushed to the brink of extinction due to human activity and the loss of their natural habitat.
If you move people from countries with a low technological level to countries with a higher technological and economic level, they will consume more natural resources. This will only make the environmental problems worse. Migration cannot solve the issue of overpopulation. It must be addressed locally.






