Claire McCollum joins bishop James Jones in Lincoln to learn about the links between Christianity and forests. The 800-year-old Charter of the Forest is given a 21st-century relaunch and JB Gill meets a former addict whose Christian faith, combined with his new job as a tree surgeon, have together cured his addiction. In Essex, a group prepares for Lent with 'Forest Church', plus hymns and songs celebrating creation, including Great Are You Lord and Indescribable.