International Day for the Preservation of the Ozone Layer of the hole in the ozone layer was observed 30 years after the protocol was signed. Due to the nature of the gases responsible for ozone depletion their chemical effects are expected to continue for between 50 to 100 years. International Day for the Preservation of the Ozone Layer September 16 was designated by the United Nations General Assembly as the International Day for the Preservation of the Ozone Layer. This designation had been made on December 19, 2000, in commemoration of the date, in 1987, on which nations signed the Montreal Protocol on Substances that Deplete the Ozone Layer.
1987 (What the Fuck Is Going On?) Run-D.M.C. type of old-school rapping"; and "The Penguin Price Guide for Record & CD Collectors" called "1987" an "entirely brilliant example of the art of disc-jockey-as-producer". Giving another retrospective review from across the Atlantic, "Trouser Press" described "1987" as "energetic" and "a loopy dance album that isn't unlike a lot of sampled records, but proceeds from an entirely different cultural understanding." Bill Drummond and Jimmy Cauty were responsible for the concept and production of "1987", its lyrics and the TR-808 beatbox rhythms. Drummond provided rap, and an additional rapper introduced as 'Chike' appears on "Don't Take Five (Take What You