Scientists from the National Institute of Oceanography (CSIR-NIO) in Goa, India, have conducted a study revealing that climate change significantly influences underwater volcanic activity along mid-ocean ridges, specifically the Carlsberg Ridge in the Indian Ocean. The research indicates that fluctuations in sea levels during glacial periods have a direct impact on hydrothermal systems, which are sensitive to changes in global climate. By analyzing mud and rock samples, researchers found rust-colored Fe-Mn oxyhydroxides that indicate volcanic activity over the past 49,000 years. The study shows that lower sea levels during glacial periods reduced hydrostatic pressure, leading to increased underwater volcanism and the release of heat and carbon dioxide. These hydrothermal systems are crucial for dispersing trace metals like cobalt and nickel into the deep ocean, potentially influencing marine life and ocean chemistry. The findings suggest that these systems serve as important archives of past climate changes and play a role in modulating trace metal flux across glacial-interglacial cycles.