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Is our attitude to wood changing? In Africa it’s a still the dominant fuel for daily survival and in Canada an architect is designing wooden high rise buildings. To discuss wood, architect Michael Green, timber researcher Dan Ridley-Ellis, geographer Reginald Cline-Cole and World famous cellist Steven Isserlis, who also plays some beautiful music. (Photo: A cut tree log. Credit: Gleb Fedorov/��ѿ��ý)