In southern New England where I live, mature hardwood forests are made up predominantly of oak, maple, white pine, hemlock, and birch trees. The oak tree, king of the forest, sends its roots as much as fifteen to twenty feet down and brings up water that it shares with other plants in the forest. With its magnificent canopy, the oak intercepts sunlight and produces carbon to feed soil microbiology. Deborah Frieze on Investment Strategies to Close the Wealth Divide.   Watch the Full Program The oak tree, says rancher Sallie Calhoun, “isn’t out for itself; it’s out for the forest.” The…