Much as we may think we know about trees, forests are in many respects as mysterious as the depths of the sea, with networks of communication we can only guess at. Forester Peter Wohlleben lifts the veil a bit with his insightful homage to primeval woodlands, beautifully presented here in an illustrated edition. Among nearly 100 color photos are images of spruces cloaked in heavy snowfall, beech leaves glowing orange in the sunlight, a Huangshahn pine growing above an abyss, and a Cuban screech owl peering out from a tree trunk. Wohlleben describes the difficult life lessons learned in "tree school," the natural cleanup crews that recycle dying trees, and the fungal communication highway dubbed the "wood wide web."