A portrait of the changing year in the Cotswolds, using revolutionary timelapse photography to show the rhythms and cycles of nature.

Michael Palin travels around the Pacific rim. He starts in the Diomede Islands in the Bering Strait, goes to see the Kodiak bear in Alaska and visits the geysers of Kamchatka. Show more

Professor Stephen Hawking explains the history of mankind's quest to explain the Universe. He shows how advances in technology have brought a greater understanding of the cosmos.