The world's population eclipsed 7 billion people on October 31, 2011. What is the history of thinking about overpopulation? What are the consequences? How can it be stopped?—should it be stopped?
Jane Goodall - Overpopulation
(03:35)
Garrett Hardin on Overpopulation
(09:27)
Seminar: Is the planet full?
(48:14)
