The Mine Kings travel to Zambia on the hunt for an ethical small-scale mine producing the highly elusive double blue aquamarine.
In the 1930s the Japanese begin designing the Yamato, the world's most powerful battleship, 30 per cent larger than anything their enemies have.
Historian Chris Skidmore explores shocking evidence suggesting that Elizabeth I's dangerous secret love life led to cold-blooded murder.
Following in the footsteps of the first Homo sapiens, Bill and Cat attempt to hunt big game in the mountains of Ethiopia.
Airline owner Niki Lauda joins forces with investigators to determine why Lauda Air Flight 004 fell into a steep dive and crashed.
Kachin, Myanmar: Renan Ozturk climbing toward the summit of Hkakabo Razi way up over the clouds....NG Studios/ Cory Richards
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Strictly necessary and performance