In the context of environmental science and geography, the three primary types of environment are the Natural, Built, and Social environments. The Natural Environment encompasses all living and non-living things that occur naturally, including the atmosphere, oceans, forests, and the complex ecosystems of the biosphere. The Built Environment refers to human-made surroundings that provide the setting for human activity, ranging from buildings and parks to massive infrastructure like bridges, transit systems, and power grids. Finally, the Social Environment (or cultural environment) involves the social and cultural context in which people live and work. This includes the relationships, institutions, and community structures that influence how individuals interact with one another. In 2026, these three types are increasingly viewed as a single, interconnected system, where changes in the built environment (like urban expansion) directly impact both the natural world and the social well-being of the population.