Tattfoo Tan’s work explores the intersection of art, ecology, sustainability, and social practice. In 2010, Percent for Art commissioned Tan for S.O.S. Pledge at PS971 in Brooklyn. A monumental marble wall with gold-painted lettering, the artwork is an artistic appropriation of the Pledge of Allegiance,with a greener mission. Percent for Art met with Mr. Tan to discuss S.O.S Pledge, along with his current projects, his uniform, and what it is he likes about worms.