Dianna Cohen is the co-founder of the Plastic Pollution Coalition, a group that addresses the pervasive problem of plastic pollution.

She was inspired to co-found the group by her work as an artist -- because her chosen material is the ubiquitous plastic bag.

She writes: "Having worked with the plastic bag as my primary material for the past 15 years, all of the obvious references to recycling, first-world culture, class, high and low art give way to an almost formal process which reflects the unique flexibility of the medium."

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