雅思阅读

📖 Reading Passage

The concept of the 'Anthropocene' has gained significant traction in geological and environmental circles, yet its formal recognition as a new geological epoch remains contentious. Proponents argue that human activities, particularly since the mid-20th century, have left indelible markers in the stratigraphic record, such as radioactive isotopes from nuclear tests, microplastics, and elevated carbon dioxide levels. These signatures, they contend, are comparable to those that define past epochs. Conversely, skeptics within the geological community emphasize that the Anthropocene lacks the clear, globally synchronous boundary required for a formal epoch, and that human impacts occur at varying rates across the planet. They suggest that the term is more useful as a cultural or historical descriptor than a strict geological classification. This debate underscores the tension between scientific precision and the need to communicate the scale of human-induced environmental change.