世间万物各有大小。仰望浩瀚星空，地球不过是沧海一粟；对于虫蚁，人类又如同巨人，遮天蔽日。宇宙是如何决定一切事物的大小的？万物的大小是否重要？本片带着这些问题，大开脑洞，进行了一系列无法实际操作的思维实验：在木星那么大的地球上生活会是什么样？我们如果变成巨人，或者是蚂蚁一 样大又会有什么变化？还有我们习以为常的太阳，把它放大或缩小一些对我们将产生什么影响？在两期节目中，我们将把这些天马行空的幻想用科学手法进行模拟，用科学的分析解释万物大小的重要之处，极具趣味性。
With North Korea's relations with the rest of the world at a new and unpredictable inflection point, National Geographic Documentary Films presents INSIDE NORTH KOREA'S DYNASTY, a groundbreaking four-episode documentary series that examines the extraordinary history of the world's only communist dynasty, three generations in the making. A year in production, INSIDE NORTH KOREA'S DYNASTY is the ultimate story of a family's power, and the relationship among a father, a son and a grandson. The series provides a look at the Kim dynasty more complex and comprehensive than ever attempted before, revealing the workings behind the formidable family dynamics at the heart of an extraordinary country. Viewers will be immersed in the family's dark and surreal story, bringing a fresh perspective on a nation ruled for over seven decades by one dynasty. Understand the family, and you understand how this country works.
东莞，中国广东重要的交通枢纽和外贸口岸，中国最具活力的国际化城市之一。过去的二十年来，东莞以高速发展的制造业闻名， 但在“世界工厂”身份之外，这里还隐藏着一个庞大神奇的美食世界。城市美食纪录片《寻味东莞》将以美食作为东莞的城市名片，带领人们探访东莞的地道⻛味，寻找一系列富有传奇色彩的鲜活美食，呈现这方水土过去和现在的碰撞，时间与空间的融合。
这部三集纪录片剧集聚焦拉丁美洲伤亡最为惨重的空难事故，调查其背后不为人知的故事和人为悲剧。
A series that looks into three of Earth's major rivers.
