雅思阅读

📖 Reading Passage

The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's systems. Unlike previous epochs, which were delineated by natural phenomena such as glacial shifts or mass extinctions, the Anthropocene is marked by markers like radioactive isotopes from nuclear tests, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Some scientists argue that human influence, while pervasive, has not yet produced a stratigraphic signature distinct enough to justify a new epoch on the geological timescale. Others counter that the rapid and irreversible changes to biodiversity and climate constitute a clear boundary, comparable to the transition from the Pleistocene to the Holocene. This debate underscores a fundamental tension between the long-term perspective of geology and the urgent, short-term concerns of contemporary environmental science.