In the week of the Earth Summit, a documentary focusing on three families who are trying to follow an environmentally friendly lifestyle. The Nobles swapped life in Leeds for
Scotland's tiny Isle of Muck. The Batchelors run an organic farm while the Everetts tried an alternative way of life in a house made from recycled materials. With Nick Knowles. Producer Kate Butler : Executive producer Julia Simmons See also Earth Summit: the Sceptical Environmentalist, 11.20pm on BBC2