Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of ...

The Ministry of Internal Affairs and Communications said Japan’s total population in 2020 was 126,227,000, a decrease of 868,000, or 0.7 percent, over the 2015 census. Tokyo’s population was ...

In this scenario, the U.S. population is projected to have already peaked and will decline by over 30% by 2100, reaching approximately 225 million. That is approximately the U.S. population in 1980.

A map shows the distribution of the slave population in the Southern states ... Bush was so razor close that broadcasters pored over electoral college maps—which they typically colored red ...

“One striking revelation was that youth aged 10 to 19 make up the largest group in agricultural households, with a total of 1 ...