Produced by the group Zero Population Growth, this button highlights anxiety created by the continued growth of the world’s population, first remarked upon by Englishman Thomas Malthus in his 1798 work, <i>An Essay on the Principle of Population</i>. Paul R. Ehrlich’s bestselling book <i>The Population Bomb</i>, published in 1968, renewed interest in the topic by raising concerns about the potential risks of overpopulation.
