Mildred Davis
Greenacres tree kept Christmas spirit year-round

In our eco-challenged world of global warming and deforestation, the holiday tree is struggling to survive as a family tradition. What do we do? Buy the artificial tree that's not biodegradable? Support the sustainable -- but not local -- tree farm? Pick up a chemically fertilized cedar that's dead by next season? Give up altogether and string a few lights on the palm out back? Here in the West, we can always go natural. There's no shortage of conifers in California forests: coulter and pinyon pines, redwoods and sequoias. But ever since the railroads plowed through the High Sierras, we've heeded naturalist John Muir's call for preservation. Instead of raiding...