1/7 At the North Pole, the sun returns after six months of darkness.
2/7 Spring arrives in the polar regions, and the sun appears after an absence of five months.
17/23 Neil Oliver is introduced to the joys of Victorian-style sea bathing in Ilfracombe. (R)
2/31 Mark Horton discovers how 13th-century Harlech Castle would have looked when it was built. (R)
BBC Two Wales only
Witness the birth, growth and death of an island in the greatest ocean on Earth. (R)
3/6 Darryl Grimason explores the wild heart of the majestic Mourne Mountains. (R)
BBC Two Northern Ireland only
Sunday 6 May 2012