Group 1 - A recent avalanche in the northern Alps of South Tyrol, Italy, resulted in the death of 3 German tourists and 2 others missing, highlighting the increased risks associated with mountain activities due to unstable snow conditions and rising temperatures [1] - The region has experienced multiple avalanche incidents, including a glacier collapse on Marmolada Peak in July 2022, which resulted in 9 fatalities, indicating a trend of increasing danger in popular skiing areas [2] - Climate change is significantly impacting winter sports, with a study showing that global glaciers have shrunk by over 5% since 2000, losing approximately 7 trillion tons of ice, contributing to a 2 cm rise in sea levels [4] Group 2 - The Italian National Research Council (CNR) warns that if global warming continues, the Marmolada glacier could completely melt within the next 25 to 30 years, further threatening winter sports and tourism in the region [4] - The United Nations World Meteorological Organization reported that 26 out of 616 World Cup events for skiing and snowboarding were canceled due to weather conditions during the 2023-2024 season, reflecting the adverse effects of climate change on winter sports events [7]

Core Insights - The article discusses a research paper published in Cell Press that evaluates the global flux of perfluoroalkyl acids (PFAA) from glaciers in the context of climate change, highlighting the urgency for coordinated action in managing historical pollutants and climate mitigation [5][6]. Group 1: Research Findings - The study identifies major PFAA release hotspots, including the Arctic, South Asia, and Central Asia, emphasizing the need for urgent action to manage these pollutants [5][6]. - PFAA, a significant industrial pollutant, poses serious risks to both ecological and human health due to its persistence and accumulation in cold regions, including glaciers [6]. - The research estimates that global glaciers release approximately 3,500 kilograms of PFAA annually, with suspended particles contributing about 12% of this total [6]. Group 2: Implications and Recommendations - The findings fill a critical gap in the global PFAA budget and stress the need for coordinated efforts to manage historical pollutants and mitigate climate change [7]. - The study suggests that controlling PFAA pollution in hotspot areas requires reducing emissions at the source and slowing down glacier melting through climate change mitigation [7]. - Effective strategies to address this dual threat necessitate interdisciplinary collaboration among scientists, local communities, and policymakers [7].

赫德岛是澳大利亚海外领地赫德岛和麦克唐纳群岛的组成部分，位于珀斯西南约4100公里处。该岛面积 368平方公里，岛上无人居住。赫德岛和麦克唐纳群岛于1997年被列入联合国教科文组织世界遗产名 录。作为亚南极地区唯一的活火山群岛，这里具有特殊的冰川地貌。 研究人员计划今年晚些时候访问赫德岛，进一步研究冰川退缩会如何威胁当地生物多样性。莫纳什大学 地球、大气与环境学院院长安德鲁·麦金托什说，目前的测绘显示冰川正在显著退缩，未来冰川会否消 失，取决于人们如何排放温室气体。 新华财经悉尼8月4日电（记者梁有昶章建华）澳大利亚莫纳什大学4日发布新闻公报说，该校研究人员 发现，自1947年以来位于亚南极地区的赫德岛已有近四分之一冰川融化，表明该岛受到气候变化的深刻 影响。 莫纳什大学研究人员日前在欧洲学术期刊《冰冻圈》上发表论文说，他们使用1947年以来的地形图以及 当前卫星图像等数据，分析了赫德岛29处冰川在1947年、1988年和2019年的轮廓、面积等特征。结果发 现，自1947年以来，赫德岛有大约64平方公里冰川已经融化消失，约占该岛原本冰川总量的23.1%。 （文章来源：新华社） ...