Zero Population Growth

Illustration of the earth with a sign with black text on a white background

Zero population growth (ZPG) is an ideology that some believe should be the ultimate goal of society - that the number of people in a specific area neither increases nor decreases. ZPG gained popularity in the late 1960s as a political movement by people who believed that the continual increase in population was the source for many of the world’s problems, like pollution and violence. ZPG can be achieved through multiple ways, one such being limiting births and immigration. China, for example adopted this policy with the one child policy.