雅思阅读

📖 Reading Passage

The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch, characterized by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were defined by natural climatic shifts or biological events, the Anthropocene is marked by anthropogenic markers such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains controversial. Critics argue that human influence is not uniform across the planet, with some regions exhibiting minimal disturbance, and that the proposed markers, such as the mid-20th century 'Great Acceleration,' are arbitrary. Proponents counter that the scale and permanence of human-induced changes, including species extinction rates and altered nitrogen cycles, justify a distinct stratigraphic boundary. This debate underscores the challenge of defining geological time in an era where human agency has become a dominant force, blurring the line between natural history and human history.