Off Australia's northeast coast lies a wonder of the world, a living structure so big it can be seen from space, more intricate and complex than any city, and so diverse it hosts a third of all fish species in Australia. The Great Barrier Reef as we know it -- 8,000 years old and home to thousands of marine species -- is dying in our lifetime.
The Mt. Erebus team has trouble landing at one of their sites and when they do their gear glitches from the cold. Meanwhile, the USS Coast Guard gets stranded from engine failure. Another team struggles to protect their 80,000 drone from a crash landing due to extreme wind. The Ross Ice Shelf Team digs themselves out after enduring a major storm and heads toward their target research spot.
Between the blue sky above and the infinite blackness beyond lies a frontier that scientists have only just begun to investigate. In "At the Edge of Space," NOVA takes viewers on a spectacular exploration of the Earth-space boundary that's home to some of nature's most puzzling and alluring phenomena: the shimmering aurora, streaking meteors, and fleeting flashes that shoot upwards from thunderclouds, known as sprites.