Overpopulation has been used as an excuse for everything from birth control to abortion to China’s ‘one-child’ policy. Worldwide, the fertility rate fell by almost 50% in less than 70 years. Worldwide ...

Scientists have reported it for decades: overpopulation can impair reproduction. Crowded chickens lay fewer eggs. Crowded mice have smaller broods. In humans, several studies have associated increased ...

Add Yahoo as a preferred source to see more of our stories on Google. Women and girls weeding a vegetable garden in a rural area of Jharkhand in Eastern India in the documentary "8 Billion Angels." (8 ...

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Last week, a high-profile study using the latest United Nations data revisited predictions of global population size. The news wasn’t good: Updated estimates using new statistical analyses suggest the ...