So it meets our social and environmental criteria, and it's entirely addictive as well. If you're unfamiliar with New Mexico's soil, let's just say that it's not the easiest to work around ... it has been justifiably likened to dusty concrete. The CobraHead is the only tool we've found that has even a hope of working here, and much to our surprise it actually does a very good job. Wonderful for biointensive cultivation, where you'll particularly appreciate how the tool's narrow head lets you reach in among closely-spaced plants.
The CobraHead blade is thin, and wears to knife-like edge. It cuts through almost any soil easily, and if it can't pull out a weed it'll chop them off below the soil. Sharp on both edges, the CobraHead can be used right- or left-handed and for many aspects of gardening besides weeding. (Great for breaking up soil, it's even useful for planting, which is oh-so-nice.)