Dear Umbra, My name's Jon and I'm a diet pop addict. My diet right now is 70-80 percent local, organic, or both, but I just can't help myself when it comes to getting my fix. I drink several 20-ouncers a day of diet and just can't seem to stop. Is my habit hurting the earth? Common sense says that water from my stainless steel canteen is a whole lot better than chemicals from a plastic bottle, but my addict brain is grasping at straws, hoping that diet pop is one of those rare exceptions. Jon B.,
Lakewood, Ohio