Core Viewpoint - The research conducted by Chinese scientists on deep-sea sediment has provided new scientific evidence for understanding the evolution of Earth's habitability and addressing future environmental changes [1][6]. Group 1: Research Findings - The research team discovered a significant increase in molybdenum isotope composition with depth in two deep-sea sediment cores from the western Pacific, indicating a potential global universality of this trend [1][5]. - Molybdenum (Mo) is a sensitive element to redox conditions, and its isotopic composition is widely used to trace the redox history of ancient oceans. However, understanding the modern ocean's molybdenum sources, sinks, and isotopic balance mechanisms is crucial for accurate interpretations [2][5]. - The updated model suggests that previous studies may have significantly overestimated the distribution of "euxinic" basins in ancient oceans, indicating that early marine environments may have been more "ventilated" than previously thought, which could have facilitated the evolution and flourishing of early life [6][8]. Group 2: Implications for Earth Sciences - The research enhances the understanding of deep-sea oxidative sediments' critical role in the global molybdenum cycle and improves the accuracy of reconstructing historical environmental changes based on geochemical indicators [6][8]. - This study provides key insights into the backdrop of life's evolution, contributing to the understanding of fundamental scientific questions regarding the origins of life on Earth [6].