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(A presentation given by Alex Sagedy, Director of Occupational Health for the American Lung Association. He discusses toxic air pollution.)

(A presentation given by Alex Sagedy, Director of Occupational Health for the American Lung Association. He discusses toxic air pollution and answers questions from the audience.)

(A presentation on conventional and persistent toxic pollution in the Great Lakes. The presenter also discusses zero discharge.)

(A presentation on conventional and persistent toxic pollution in the Great Lakes. The presenter also discusses zero discharge.)

(A presentation on conventional and persistent toxic pollution in the Great Lakes. The presenter discusses zero discharge and answers questions from the audience.)

(A presentation on conventional and persistent toxic pollution in the Great Lakes. The presenter discusses zero discharge and answers questions from the audience.)