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 ...

Population ageing, a global phenomenon characterised by a significant increase in the proportion of older people within a population, stands as a testament to humanity’s progress and challenges. As ...

China has been keen to slow population growth for several years. A larger population equals more mouths to feed, more houses and jobs required and a greater demand on schools and hospitals.

This variation permits flexibility and survival of a population in the face of changing environmental circumstances. Consequently, genetic variation is often considered an advantage, as it is a ...

The U.S. Census Bureau has projected that the nation's population will hit 341,145,670 at midnight on New Year's Day. It marks an increase of over 2.6 million people (0.78%) from January 1 ...

Since the middle of the 20th Century, the global population has more than tripled in size, from 2.5 billion in 1950, to 7.9 billion in 2021. Research by the United Nations projects that the global ...