By James Eli Shiffer

My Sunday column followed up on a story in January about a corner in Minneapolis's Como neighborhood that was labeled a "municipal problem" because of its chronic, unsightly accumulations of broken-down cars. But the concern now is what lies underneath the old service station. If you needed any more evidence of the environmental costs of our petroleum addiction, check out the Minnesota Pollution Control Agency's searchable list of petroleum spill sites statewide. Leaks from storage tanks and pipes and spills have contaminated soil and groundwater at businesses and homes, sometimes showing up in the water that flows out of kitchen faucets. Many of the sites on the list have been cleaned up, but you can search for past and present contamination in your neighborhood by searching on your zip code.