What is needed is a radical rethink of how we want our environment to be in a few years. We need to decrease our population, not increase it. We need to stop immigration to Europe, particularly the South East of England, and we must increase the retirement age to 75 since people are living to a much greater age.
Tom, England

I mentioned this to some of my German colleagues and their impression is that it is a silly idea. If you look at the make-up of people here in Germany it is apparent that the ethnicity has been changed by the influx of people and many legal immigrants are making up for the shortfall of population. That is without giving a 1000 dmarks per month per child
Mark, Germany (UK citizen)

Immigration is certainly one part of the solution but it poses its own problems with some people feeling threatened by a large influx of immigrants, and the obvious brain-drain on donor countries who need these workers. Increasing the retirement age is another option, or perhaps even a later retirement age, but with a shorter working week. Perhaps we should be happy that we finally have the control over population growth which poorer countries would love to have?
Michael Gahan, Ireland