It’s a common saying that elephants never forget. But the more we learn about elephants, the more it appears that their impressive memory is only one aspect of an incredible intelligence that makes them some of the most social, creative, and benevolent creatures on Earth.
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.
With 2021 set to be the hottest year on record, millions of people around the world will have their health, livelihoods, and lives endangered by high temperatures. This documentary explores the devastating impact extreme heat has across the globe, and tells the human stories behind climate change, from water shortages in impoverished areas, to people being forced from their homes to escape life-threatening temperatures.