Ancient mass extinction shows how Earth turned into a super-greenhouse
25200万年前，对二叠纪三叠纪灭绝事件的化石研究的研究表明，世界许多地区的森林被抹掉了，破坏了碳循环，并确保地球保持数百万年的热量
2025 MARINE CORPS ENGINEER ASSOCIATION (MCEA) AWARD RECIPIENTS
r 252009z 6月25日298/25 innclassified // msgid/genadmin/cmc l Washington DC // SupJ/2025 Marine
2024 MARINE CORPS ENGINEER ASSOCIATION (MCEA) AWARD RECIPIENTS
r 252009z 6月25日298/25 Unclassified // msgid/genadmin/cmc l Washington DC // SubJ/2024 Marine
