Zipf’s law for city populations is a well-known statement regarding the proportions between the most populous cities of a given area, first mentioned by German physicist Felix Auerbach (Auerbach 1913, Zipf 1949, Simon 1955). Many observers, including Paul Krugman, have held Zipf’s law to be...

The Universal Declaration was, of course, the first of the three global international human rights instruments which have collectively come to be known as the International Bill of Rights. Very often, however, this latter term appears within quotation marks or is prefaced by the qualifying...

This article considers the moral claim that all persons have a human right to the material necessities of life, and that governments are obligated to assure them to individuals who have no other way to obtain them. It assesses that claim by exploring three questions. First, does the...