U.N. Report from Rio on Environment a ‘Suicide Note’ The recent three-day meeting was more easily known as Rio+20, but so few specifics, so few targets, so few tangible decisions came out of the gathering that some participants were derisively calling it “Rio Minus 20,” or “Rio Plus 20 Minus 40.” “A failure of epic proportions” was the verdict from Kumi Naidoo, executive director of Greenpeace In…