This article was published today at the Green Room. It examines the taboo currently suppressing open, public discussion of human overpopulation. It introduces the Global Population Speak Out, a project designed to weaken the taboo.
One point I'd like to have made more strongly is that the taboo is especially visible in the failure of major environmental organizations to speak up about overpopulation. They need to be pushed until they do. Otherwise, they have no chance of playing a major role in solving the global ecological crisis.