overpopulation is the single most important public health problem in the world.
He harangues people about overpopulation, SUVs, and carbon emissions.
Fortunately, though, overpopulation has a remedy: birth control.
overpopulation was not the fault of the people, but their misfortune.
overpopulation had long since ceased to be a problem—the atomic wars had seen to that.
The birth control movement assumes that the world suffers from overpopulation.
A much greater danger, according to Dr. Reed, is overpopulation.
Many parts of the country are suffering from overpopulation.
Cousin Yachkovich begins again at his talk on overpopulation.
Cousin Yachkovich is always discoursing on overpopulation; that is his hobby.