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Dianna Cohen: Tough truths about plastic pollution | TED Talk | TED.com [Video file]. (2010, April). Retrieved
      from  https://www.ted.com/talks/dianna_cohen_tough_truths_about_plastic_pollution?language=en
Frank, P. (2016, January 21). Artist who left 1,200 sculptures in an abandoned alley will forever remain a mystery. Retrieved
      from http://www.huffingtonpost.com/entry/outsider-artist-who-left-1200-sculptures-in-an-abandoned-alley-will-forever-       remain-a-mystery_us_569fadd5e4b0a7026bf9bb09
Resident's guide to recycling. (n.d.). Retrieved from
      http://dallascityhall.com/departments/sanitation/DCH%   20Documents/pdf/DallasRecyclingGuide.pdf
Robson, A.( 2013, November 19).Trash + love: Aurora Robson at TEDxPeachtree [Video file]. 
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Yuneda, Y. (2009, April 18). Chris Jordan’s wave illustrates ocean garbage | inhabitat - green design, innovation, architecture, green           ​      building. Retrieved from http://inhabitat.com/eco-art-chris-jordans-gyre/