BBC Four HD Sunday

The comedian explores a fascinating corner of the Kent coast as he walks down to Dungeness. Along the way he meets locals, explores military ruins and rides a steam train

Horticulturist Monty Don visits the private oasis of Brazilian artist Burle Marx and witnesses the floating gardens of the Amazon while touring the lush vistas of South America

George McGavin studies an oak tree throughout the seasons of the year, investigating its surprisingly sophisticated biology and how it adapts to its changing environment

Part one of two. Looking back at the life of Mary Whitehouse, who ran a 30-year campaign to turn back the tide of the permissive culture she saw sweeping through society

Part two of two. In the 1970s, Mary's battle with permissive society heats up as ideas of progress and suggestions that nothing should be censored gain currency

Bettany Hughes' series exploring the lives and teachings of influential ancient philosophers concludes with a profile of the Chinese thinker Confucius

Huw Stephens reveals how, as the 20th century dawned, artists found radical new ways to depict Wales, pushing themselves to extremes

Horticulturist Monty Don visits the private oasis of Brazilian artist Burle Marx and witnesses the floating gardens of the Amazon while touring the lush vistas of South America