The healthfulness of the American environment improved rapidly through at least 1950, leading to a doubling of lifespans. But rising rates of obesity, diabetes, and other diseases suggest it has recently gotten worse. What does this pattern tell us about our personal and social environment?
Two different theories exist concerning the origin of children: the Theory of Sexual Reproduction (ThoSR) and the Theory of the Stork (ThoS). Nowadays, many people believe in the theory of reproduction, simply because they have been taught this theory in school.