Minneapolis Star Tribune: Things are only getting worse for the formerly innocent earthworm.
After being cited by a University of Minnesota forestry professor as a threat to northern forests, the earthworm -- long a symbol of earthy richness and fishing-hole fun -- is now being blamed in a study for possibly helping to increase greenhouse gas emissions.
In a paper published recently in Nature Climate Change, two U.S. scientists, along with one from the Netherlands and one from Colombia, analyzed 57 studies of earthworm...