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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A look at the brilliant geometric shapes and exceptional megalithic sites across the Earth.
Fearsome predators: owls; leopards.
Examining some of the animal kingdom's fastest sprinters and cleverest species.
The anteater; the walrus.
The beluga whale; the owl.
Fred Buyle travels the world to tag or photo-identify immense and mysterious marine creatures.
In the Filipino village of Oslob on the Cebu Island, people suffer from typhoons and overfishing.
The East Australian current brings a warm change to cool temperate ecosystems.
A brave zebra stallion faces the confident lions; Wakanaka proves her predatory prowess.
ALERT seeks to reintroduce captive bred lions to the wild.
A groundbreaking program attempts to return Africa's lion population back to its former glory.
Steve Morris provides a glimpse into the mind of a white shark.
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.
Exploring the large and powerful anaconda in remote parts of the Amazon rainforest.
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.
Dinosaurs from the Triassic to the Cretaceous period come to life on the giant IMAX screen.
A middle-aged turtle finds underwater adventure.
Inside look at a land that has a natural event that happens only once every 100 years.
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