Portland may be a green city, but some of its school children are breathing air more like the polluted skies of Cleveland. A  USA Today study found six of our city's schools in northwest and north/northeast Portland among the worst in the nation for exposing children to airborn toxins. Benzine, a carcinogen found in gasoline, exceeds DEQ safety standards by 26 percent. Frustrated with lack of action by state regulators, parents of children in some of the mot impacted schools are organizing the community.