Created in 1950, this invention can be attributed to Canadians Harry Wasylyk, Larry Hansen and Frank Plomp.[1] In a special on CBC Television, the green garbage bags ranked 36th among the top 50 Canadian inventions.[2] The black plastic bags, but also white, and clear bags, are also introduced on the same year in the United States. the 2 ply are introduced in the 1970s, and the 3 ply are introduced in the early 1980s.