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 organisms of ...

The global human population has been climbing for the past two centuries. But what is normal for all of us alive today — growing up while the world is growing rapidly — may be a blip in human history.

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 ...