Available on BBC iPlayer
Airport Live Episode 3
3/4 Dallas Campbell looks at the hundreds of markings that must be painted on to every plane.
Nature's Great Events The Great Feast
6/6 Whales and sea lions alike journey to the seas off Alaska to feed on the plankton bloom.
Fred Dibnah's Made in Britain A Lifetime's Achievement
12/12 Fred Dibnah completes his journey with a final trip to London to collect his MBE.
Operation Snow Tiger Episode 2
2/2 The team search for breeding Siberian tigers in the depths of the Russian winter.
Earthflight North America
1/6 This episode takes flight across North America, as snow geese fall prey to bald eagles.