Japanese Have Been Producing Wood for 700 Years Without Cutting Down Trees...

"In the 14th century, the extraordinary Daisugi technique was born in Japan. In fact, the Daisugi plan for these trees to be planted for future generations and not cut down, but pruned as if they were giant bonsai; by applying this technique, the wood obtained is straight and knot-free, practically perfect for building.
An artful pruning that allows the tree to grow and sprout while using its wood without ever felling it. An extraordinary technique" ...