《自然》,在线发布: 2026年11月9日; DOI : 10.1038/d41586-026-02998-0Nature报告了近年来学术自由度急剧下降或飙升的五个国家。Nature, Published online: 09 November 2026; doi:10.1038/d41586-026-02998-0Nature reports on five countries where academic freedom either plummeted or soared in recent years.