Is your woodlot crowded with undesirable non-native plants? Well, okay, you probably don't have a woodlot, but consider that those who do must deal with the encroachment of invasive species that threaten the economic livelihood of their business. Visit the Forest Stewardship Library to read about "Control of Nonnative Invasive Plants on your Woodlot". Part of the "Biodiversity of a New England Woodlot Series", this document has practical information about invasive plants, including sections on chemical and mechanical control options. The Weed Wrench gets my vote for coolest tool.