One of the great challenges of ecology is to understand the factors that maintain, or undermine, diversity in ecosystems, ...

Researchers have developed a model that captures the dynamics of human dispersal across the continent during the last Ice Age in unprecedented detail. An interdisciplinary research team from the ...

Aristotle in his Politics, discusses: the territorial size of the city-state, the division of the land between public and private, the size of the population, and the desired per citizen product which ...