Environmentalists and human-rights advocates regularly point to a growing world population as a potential source of strife. But one environmental journalist doesn’t agree. Fred Pearce, author of The Coming Population Crash, argues that fears of a population explosion are overblown. His recent post on Grist sparked a sharp rebuttal from Robert Walker, executive vice president of the Population Institute. In this PBS interview with Need to Know host Alison Stewart, Pearce and Walker talk about the issue of population growth and its impact on climate change.
