San Diego Union-Tribune: That tree in your living room is probably OK. It likely came from a commercial farm, where it was carefully nurtured and harvested at a relatively young age. But for vast swaths of mature, wild pine forests – lodgepoles, ponderosas, sugars, whitebarks and other species – the future seems much more bleak. In some places, there may be no future at all. Millions of pine trees from Mexico to Alaska and Canada are dead and dying, victims of an apparent catastrophic …