P14a CEEFAX 143 Sat 29 Oct 22:03/47   8/10  M M A  SUNDAY OCTOBER 30 BBC2 1915-2005 In The Natural World Anthony Smith and three friends build and launCh a catamaran in the heact of the Amazon. This film is the story of their 3,000 kilometre journey through the wilderness and the Wild +fst - of Amazonia. They travel from the magnificent forests of the Mato Grosso to the mighty dam at $vcurui. The trip, however, does not turn out to be quite the macho epic that the travellers are anticipatingN BBC Facts Index 140 More R4 Update BBC Facts Tomorrow Headlines