/tags/earthworms earthworms en-US Copyright Wed, 30 Jul 2008 04:00:00 GMT /news/2008-07-30/worms-change-great-lakes-forests For thousands of years, there were no earthworms in the forests around the Great Lakes. Now many exotic species are invading the region, changing the way… Wed, 30 Jul 2008 04:00:00 GMT /news/2008-07-30/worms-change-great-lakes-forests admin