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Wood is a vital human resource. But trees inspire myths and reverence. So, Mike Williams asks, why are our feelings about trees so mixed? He hears why every human age is a ‘wood age’, why trees are crucial to social life in African cities, why one New Zealander swapped cutting trees for spending nights in them, and why Danes fear global disease and climate change may lose them their mythical ‘tree of life’.

(Image: An arborist works on top of a tree at The Royal Botanic Gardens, Kew. London Credit: Getty Images)