An excellent on-line book and video by the Population Institute.
Any book that starts and ends with a quote by Albert Bartlett is worth your time.
“Can you think of any problem in any area of human endeavor on any scale, from microscopic to global, whose long-term solution is in any demonstrable way aided, assisted, or advanced by further increases in population, locally, nationally, or globally?” – Albert Bartlett
Overdevelopment, Overpopulation, Overshoot (the book)
Lord Man: A Parable (the video)