Evidence from academic institutions and international organizations shows dramatic improvements in human well-being. These improvements are especially striking in the developing world. Unfortunately, there is often a wide gap between reality and public perceptions, including that of many policymakers, scholars in unrelated fields, and intelligent lay persons. To make matters worse, the media emphasizes bad news, while ignoring many positive long-term trends. Please join us for a discussion of psychological, physiological, cultural, and other social reasons for the persistence of pessimism in the age of growing abundance.