1. Overview In 2024, Antarctic sea ice reached a record low, significantly impacting global climate systems and marine ecosystems. Scientists attribute this decline to increased greenhouse gas emissions and rising polar temperatures. The reduction in sea ice threatens marine habitats and contributes to global sea level rise. 2. Key Issues 2-1. Causes of Ice Loss Greenhouse Gas Emissions: Human activities are accelerating global warming, melting Antarctic sea ice. Climate Variability: Abnormally high temperatures in the polar region are hastening the ice loss. 2-2. Changes in Marine Ecosystems The loss of sea ice reduces habitats for Antarctic species like krill and penguins. These changes disrupt the marine food web, affecting apex predators such as whales and seals. 2-3. Global Sea Level Rise Ice loss accelerates glacier melting, causing sea levels to rise and threatening low-lying nations and island territories. 3. International Reactions 3-1. Scientific Research and Collabor...