Post WWI vs Post WWII Human Civilization

After the horrific agonies of World War One, the progressive worldview was rejected both in America and abroad, partly due to narrow minded self-interest, but also because humanity was otherwise preoccupied. Like careening drunks, we commenced a long and horrible infatuation with ideologies — from communism and fascism to nationalist jingoism and every other "ism" imaginable. Hitler and Stalin were no more than particularly gruesome manifestations of this fever — a passion for simplistic ...

 Iodization of Salt in 1924 Increased American IQs 15 Points

Iodine deficiency is the leading cause of preventable mental retardation in the world today. The condition, which was common in the developed world until the introduction of iodized salt in the 1920s, is connected to low iodine levels in the soil and water. We examine the impact of salt iodization on cognitive outcomes in the US by taking advantage of this natural geographic variation. Salt was iodized over a very short period of time beginning in 1924. We use military data collected during W...