Alan Keith 1950s, he devoted time to devising and presenting music programmes for the BBC. In 1959, he devised "Your Hundred Best Tunes", a programme of famous classical music, operetta and ballads. Keith chose the original 100 pieces himself. Many works were suggested by listeners and played in the programme. Thus a good many more than 100 works were played and the list evolved. Therefore, in subsequent years, a 100 Best were periodically voted for by listeners. In early March 2003, at the age of 94, he recorded an announcement that he intended to retire from the programme after 44 years. However,
Material World (radio programme) on Radio 4. The programme was presented by Quentin Cooper from 2000 to its end in 2013. Material World was one of the BBC's main conduits for up-to-date scientific news, along with "Frontiers", "Science in Action", and "Bang Goes the Theory". From 5 April 2010 the programme was repeated on a Monday evening at 21.00, in the former slot of "Costing the Earth". For a short time, when programmes on 5 Live began webstreaming with video, "Material World" was also webcast. On 14 June 2013 it was announced that the show was to be cancelled, to be replaced by a