"Plastic Pollution in the Oceans has Reached Critical Mass" , the latter symbolized by the sphere of Plutonium, approx the size of the critical mass for a nuclear bomb.  Materials: Plastic Yarn (Plarn) for background (crochet), sphere knit from hand-dyed Merino Sock woll (scrap) and black embriodery stitched on

Plastic Pollution in the Oceans has Reached Critical Mass 

by Verena Winiwarter

the latter symbolized by the sphere of Plutonium, approx the size of the critical mass for a nuclear bomb.  Materials: Plastic Yarn (Plarn) for background (crochet), sphere knit from hand-dyed Merino Sock woll (scrap) and black embriodery stitched on