PG | 1h 41m | Documentary | November 2, 2021- United States| Based on German conservationist and author Peter Wohlleben’s 2015 bestselling book of the same title, the slow-paced but info-packed “The Hidden Life of Trees” very quickly makes one thing abundantly clear: J.R.R. Tolkien got it right. Trees are basically Ents. Wohlleben himself is the main subject of the film. Presenting us with his biological, ecological, and academic expertise that’s grounded in a deep, Teutonic matter-of-factness, former forester Wohlleben explains that trees are sentient beings. They talk to each other, share nutrients through their intertwined canopies and root systems, have complicated social networks, take care of and feed their kids (seedlings and infant trees) with liquid sugar, and outwit pesky insect infestations by, for example, timing their blossoming to produce bumper crops that will outstrip the local fauna’s ability to gobble up all their seeds. Some species can protect themselves …