Grist: Root-rotting fungi have lived among the Douglas firs of the Pacific Northwest for thousands of years - perhaps since the last ice age. They`re an invisible part of the sweeping forest scenery, ready to fell a sick tree or feast on a dead one.
But, in case you haven`t noticed, things have been going a tad crazy with the environment lately. Douglas firs in the Pacific Northwest have been dying, costing the timber industry millions of dollars a year. Some have been killed by beetle attacks; others...