The great Cambridge botanist Oliver Rackham has a new book out, called “Woodlands.” Insofar as it is fair to say that the life work of such a Renaissance Man has only one subject, woodlands is it, and how trees are not “merely part of the theatre of landscape in which human history is played out, or the passive recipients of whatever destiny humanity foists on them . . . (they are) actors in the play.†There’s an admiring and knowledgeable review here.