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This long-running, award-winning documentary series focuses on science, its many applications, speculation, history and researchers. Inspired by the BBC documentary program "Horizons, " the U.S. series frequently features interviews with scientists directly involved in the topic at hand, and sometimes even boasts footage of a particular discovery.

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Camera traps and drones offer an up-close look at animals without disturbing them, providing insight into the secret world of animals, including whales, tigers and giant armadillos.
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On the 50th anniversary of its first flight, a history of the DC-3 illustrates its importance to aviation.
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A journey through history and the human mind to explore violence, and how a more peaceful world can be created.
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Shipbuilders in Italy work around the clock to build the Seven Seas Explorer, the world's largest and most luxurious cruise ship.
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The discovery of new fossil bones in a Moroccan cliff reopens the investigation into a creature called the Spinosaurus.

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Consistently stunning documentaries transport viewers to far-flung locations ranging from the torrid African plains to the chilly splendors of icy Antarctica. The show's primary focus is on animals and ecosystems around the world. A comic book based on the show, meant to be used an as educational tool for kids, was briefly distributed to museums and schools at no cost in the mid-2000s.
This award-winning series presents compelling untold stories and covers a wide array of provocative subjects. "Explorer" aired for 25 years -- the longest-running documentary series in cable TV history -- before being relaunched in 2015 after a five-year hiatus. Each monthly episode of the new "Explorer" takes a similar deep dive inside a story from the pages of a recent National Geographic magazine issue, taking viewers not only to the most remote corners of the globe but also to the furthest reaches of the mind and deepest crevices of history -- on urgent missions of discovery.