简介：拉斯维加斯的医生们举办了一场颇受争议的网上竞赛，参与者们急不可耐地想要获得免费体外受精的机会— 这种手术很少得到医保覆盖。

简介：Black holes stand at the limit of what we can know. To explore that edge of knowledge, the Event Horizon Telescope links observatories across the worl

简介：In 2016 filmmaker/photographer Pete McBride and writer Kevin Fedarko set out on a 750-mile journey on foot through the entire length of the Grand Cany

简介：Archaeologists dive into a flooded pyramid near the Nile, to search for a king's burial that could reveal clues about the ancient kingdom of Kush.

简介：For centuries Egyptologists have believed that the Great Pyramids of Giza were designed as tombs. But why have no bodies or treasure ever been discove

简介：Best friends travel though Latin America meeting shamans, experimenting with plant medicines, and wondering about what makes a life well-lived when on

简介：每年，有许多不同种类的候鸟飞行数千英里往返穿越美墨边境，它们并不在意人类制造的各种法律和障碍。两国边境上虔诚的观鸟者，以及所有政治派别的人，对这些生灵和它们的险阻之旅怀有同样的强烈情感。纪录短片《观鸟者》由奥蒂利娅·波蒂略·帕杜亚（《Diario a Tres Voces》）执导。该片赞扬了那些观察

简介：BBC“电视史上的里程碑”，当代艺术历史最具雄心壮志的纪录片拍摄工作，由著名艺术历史学家克拉克爵士担任编剧与主持，探讨西欧文明，而爵士更在本片中界定了人类文明发展中的几个重要阶段。《文明的轨迹》历时两年才拍摄完毕，剧组跨越13个国家，曾走访百多个城市拍摄，本纪录片首年播出时更被喻为电视史上的代表作。

简介：尼尔·阿姆斯特朗登陆月球仅九个月后，美国宇航局便迎来了最大的危机：三名宇航员乘坐的宇宙飞船在前往月球的途中遭遇了灾难性的爆炸。

简介：In the backwoods of Ontario lies a town called Kinmount. This little hamlet of only a few hundred residents no longer has a gas station or a school; h