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A collection of programmes devoted to trees.
Chris Packham relives programmes from the Living World archives.
Melvyn Bragg and his guests discuss photosynthesis.
Helen Mark goes to a forest school in woodlands in Gloucestershire.
Justin Rowlatt investigates Brazilian successes in fighting deforestation.
Professional tree climber James Aldred visits Morocco to climb a giant Atlas cedar tree.
Ian Marchant explores whether trees really do have miraculous powers.
Brett Westwood joins botanist Tim Rich to look for the whitebeam trees.
In Snowdonia, a hidden valley reveals a magical Celtic rainforest along the forest floor.
Is the crisis in the UK's ash forests a vision of the future? Tom Heap reports.
Professional tree climber James Aldred climbs one of Britain's tallest trees.
Jonathan Freedland explores tree disease by charting Dutch Elm Disease from the 1920s.
James Aldred travels to California in search of the world's biggest trees.
James Aldred visits the Grove of Titans and climbs the world's tallest tree.
John McCarthy explores British woodland and meets a fan of travel in cold landscapes.
On a Shropshire hillside ancient holly trees reveal an astonishing relationship with rowan
Paul Evans assesses the future of our urban trees.