At the height of its power between the 9th and 15th centuries, Angkor was a resplendent city, considered the most extensive urban complex of the pre-industrial world. But by the late 16th century, the empire was in its death throes.
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Summer ended several days ago and Autumn is invading the whole of Iberia.
Almost everywhere is over 30 C and some places in the south are even reaching 50 C.
Life begins once again as the sun is heating all in the Iberian Peninsula.
Animals travel more than 500 miles across the Serengeti plains in Tanzania and Kenya.
Inside look at a land that has a natural event that happens only once every 100 years.
Between a jagged cliff face and a roaring ocean, lives a colony of Australian Sea Lions. In an environment equally harsh and beautiful, be immersed in a classic tale guided by one of Australia's unique, intelligent, and playful animals.
The Serengeti is home to some of the iconic animals of Africa and hosts an important natural event.
Shows some of the most venomous creatures in the animal kingdom and the various ways they hunt prey.
From pumas to bald eagles to grizzly bears, witness apex predators using strength and cunning.
Showcases the smallest yet most dangerous assassins in the animal kingdom.
Showcases the smallest yet most dangerous assassins in the animal kingdom.
Takes a look at the animal kingdom's most opportunistic eaters.
Examines the lives of the barracuda, the leopard seal and the bull shark.
Examines the lives of the fox, lynx and harpy eagle, three predators living in the wild.
Fred Buyle travels the world to tag or photo-identify immense and mysterious marine creatures.
A look at humanity's documenting of belief systems and illuminating observations.
A look at the brilliant geometric shapes and exceptional megalithic sites across the Earth.
A look at ancient architecture, which stands as a lasting testimony to human achievement.
How historical icons like Alexander the Great, Cleopatra and Vlad III died.
SETI searches for intelligent life in the universe; top candidates to host life beyond Earth.
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