雅思阅读

📖 Reading Passage

The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by human impact on Earth's systems. Unlike previous epochs, which were shaped by natural forces such as glaciation or volcanic activity, the Anthropocene is characterized by markers including radioactive isotopes from nuclear tests, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that the term oversimplifies complex human-environment interactions and that the proposed markers, such as the mid-20th century 'bomb spike,' may not represent a globally synchronous boundary. Proponents counter that the scale and permanence of human alterations, particularly in sedimentary records, justify a distinct epoch. The debate reflects broader questions about how science defines time and humanity's role in planetary history.