Continuing the historical strand.
7.40 Western Front Professor
Richard Holmes 's look at how the First World War was fought. Feeding the Front. Poison gas was first used as a weapon of war on 22 April 1915 as a desperate measure to break the stalemate that had been reached. This date marked the start of a new era in warfare.
Director Steven Clarke Shown last Thursday Digital widescreen
8.10 Into Africa with Henry Louis Gates
The Holy Land. On . the penultimate leg of his African journey,
Henry Louis Gates travels through the highlands of Ethiopia, a country that conjures up images of war but which for over 1,600 years was a Christian kingdom. See today's choices. Director Nick Godwin ; Series producer Ben Goold
Digital widescreen Subtitled....... Codefor7.40-9.00 (not PDC)....