An assortment of marine life rarely seen before.(03:02)
Megalodon was the biggest predator ever to swim the oceans who ruled the seas for 20 million years.(01:06)
A captivating documentary looks for the truth behind the compelling Mayan myth - that the world will end in 2012.(01:18)
The island is so small it has never had human habitation, is probably the most pristine island.(03:00)
Follow Ewan McGregor and best friend Charley Boorman as they prepare to bike from the top of Scotland to the tip of Africa.(02:30)
Meet the feathered 'Terror Birds'.(02:22)
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Strictly necessary and performance