Much of the palm oil imported into the U.S. ends up in snack foods such as cookies, crackers and microwave popcorn. Heather Rousseau/NPR hide caption

toggle caption Heather Rousseau/NPR

Dunkin' Donuts plans to go green by committing to purchasing all of its palm oil from sustainable sources. Andrew Huff/via Flickr hide caption

toggle caption Andrew Huff/via Flickr

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