At an altitude of 6100 meters on the Puruogangri Ice Sheet, Chinese scientists successfully drilled a 324 meter long ice core using domestically produced drilling equipment, breaking the previous world record of 308.6 meters held by the Guliya Ice Cap and becoming the longest ice core drilled from a glacier in mid to low latitudes worldwide. On the 29th, the reporter learned the information from the second Tibetan scientific expedition, Ruogangri Ice Field Base Camp, located in Shuanghu County, Naqu City, Xizang, with an altitude of more than 5400 meters. Xu Baiqing, deputy director of the Qinghai Tibet Plateau Research Institute of the Chinese Academy of Sciences, led the team to successfully drill this ice core of great scientific value at the operation site on the top of the ice sheet for more than a month. Ice cores are the 'time capsules' of Earth's history. By drilling and preserving ice cores, we can extract valuable historical information and understand past climate and environmental changes, "said Xu Baiqing. Ice cores in mid to low latitudes are important "natural archives" for studying global climate change, except for the North and South Poles. Xu Baiqing introduced that the longest ice core here has unique geographical and climatic characteristics, recording long-term climate change and environmental information in the region, including the historical changes of key climate elements such as temperature and precipitation, as well as environmental events such as volcanic eruptions and atmospheric pollution. It provides valuable data and samples for studying the patterns, mechanisms, and predicting future trends of global climate change. Previously, this record was kept by the Guliya Ice Cap in the West Kunlun Mountains in Ali, Xizang. Scientists from China and the United States drilled a 308.6 meter long ice core here in 1992, spanning over 700000 years. Subsequently, China and the United States conducted in-depth cooperation in the field of ice core research on the Qinghai Tibet Plateau. Since its discovery, the Puruogangri Ice Sheet has been a new hotspot in international research on the Qinghai Tibet Plateau. Thompson, an academician of the American Academy of Sciences and a foreign academician of the Chinese Academy of Sciences, has carried out scientific research cooperation with Chinese scientists since 1984, jointly drilling ice cores in several glaciers in China, and publishing research achievements on Chinese ice cores in authoritative magazines. Ice cores travel through time and space, showing us what happened on Earth in the past. Hundreds of thousands of years later, through drilling these ice cores, humans can reconstruct the history of Earth's climate. "He, who is constantly following the progress of this ice core drilling, said. It is reported that once glaciers melt, their sealed records of Earth's history will also disappear, making it particularly important to drill and preserve ice cores. Even if glaciers melt, historical information can still be extracted from ice core samples. By measuring thickness and taking cores, we can better examine the changes happening on the largest ice sheet in this mid to low latitude region and the recorded environmental changes, thus gaining a more comprehensive understanding of the impact of global climate change on glaciers Yao Tandong, an academician of the CAS Member and leader of the second Qinghai Tibet expedition, said. The second Qinghai Tibet scientific expedition launched the "Guarding the Water Tower - A Major Iconic Scientific Expedition of 'One Plain, Two Lakes, and Three Rivers'" in August this year, and the ice core drilling of the Puruogangri Ice Field was an important part of this expedition. (New Society)