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Over the last 30 years, a range of different complementary currency models have been developed and diffused across the world. Such currency systems have been researched from a variety of different perspectives, such as policy tools (Williams et al., 2001) and social movements (North, 2006). Many of these have explicit links to sustainability objectives and the green movement (Helleiner, 2000; Longhurst & Seyfang, 2011; North, 2010a; Seyfang, 2009), and some environmental writers argue that monetary reform and the development of multiple currency systems are critical factors in achieving environmental sustainability (Douthwaite, 1999). This chapter explains how such a ‘green’ currency emerged from within the environmentally focused Transition Town social movement. This movement has given rise to a range of locally based grassroots enterprises that deliver local services and goods. However, it is argued here that such enterprises can also act as instigators of radical innovations, such as complementary currencies. As such it conceptualises currencies as a form of technology and uses the empirical case of the Totnes Pound currency as an example of a technology that has emerged from civil society. Adopting this framing, the chapter draws on theory relating to the formation of innovative technological ‘niches’ to provide insights into the challenges that they have to overcome in order to survive and flourish. The chapter therefore argues that exploring complementary currencies through the lens of innovation theory can provide valuable insights into their development, and that such an approach may prove useful where grassroots enterprises are engaged in other forms of innovative activity.

In The Changing Body (Cambridge University Press and NBER, 2011), we presented a series of estimates showing the number of calories available for human consumption in England and Wales at various points in time between 1700 and 1909/1913. We now seek to correct an error in our original figures and to compare the corrected figures with those published by a range of other authors. We also include new estimates showing the calorific value of meat and grains imported from Ireland. Disagreements with other authors reflect differences over a number of issues, including the amount of land under cultivation, the extraction and wastage rates for cereals and pulses and the number of animals supplying meat and dairy products. We consider recent attempts to achieve a compromise between these estimates and challenge claims that there was a dramatic reduction in either food availability or the average height of birth cohorts in the late-eighteenth century.

This study develops a method for categorizing airports based on the amount of cargo each airport handles in relation to its passenger traffic. Such a categorization allows for systematic comparisons of airports largely specializing in cargo with those that have more balanced freight/passenger roles. The results show that cargo-focused hub airports (i.e., major cargo-handling airports that handle little or no passenger traffic) in the continental United States shoulder a growing burden in freight movement. One of the most successful of these, Chicago Rockford International Airport, has risen to become the 15th largest airport with respect to domestic cargo shipments on the US mainland, while Texas's Fort Worth Alliance Airport and Seattle's Boeing Field also rank among the top 50. A considerable amount of volatility, however, has accompanied the evolution of this specialized grouping of airports over the past 20 years. Presently, among the 100 airports on the U.S. mainland handling the most domestic freight, cargo-focused hub airports serve only a secondary role, handling less than 5% of domestic air freight shipments as measured by weight. Most major hubs operated by air-freight integrators, such as those developed by FedEx and UPS at Memphis, TN, and Louisville, KY, respectively, are at mixed-purpose airports that have a greater balance of passenger and freight activity. The findings point to some of the unique challenges facing airports that specialize in the movement of freight.

The British North American colonies were the first western economies to rely on legislature-issued paper monies as an important internal media of exchange. This system arose piecemeal. In the absence of banks and treasuries that exchanged paper monies at face value for specie monies on demand, colonial governments experimented with other ways to anchor their paper monies to real values in the economy. These mechanisms included tax-redemption, land-backed loans, sinking funds, interest-bearing notes, and legal tender laws. I assess and explain the structure and performance of these mechanisms. This was monetary experimentation on a grand scale.

The chapter first emphasizes the aspects which Steuart (1767), Thornton (1802), Tooke (1844, 1838–1857), and Keynes (1923) have in common about the relation between the exchange rate and the short-term rate of interest: they all considered a temporary unfavorable foreign balance caused by an asymmetrical exogenous shock, which called for a discretionary policy favoring international short-term capital inflows to overcome the consequences of the deficit. These aspects draw an unorthodox genealogy on this issue between the four authors, contrary to the tradition originating in Hume and developed later by the British monetary orthodoxy. Secondly, the chapter shows that there was an analytical progress from Steuart (1767) to Keynes (1923), which however faced a limit: if it reinforced an unorthodox genealogy, it did not integrate the modern idea according to which international short-term capital movements may themselves be a source of external disequilibrium. The origin of this limit was probably in the question raised, which was the adjustment to an exogenous asymmetrical shock.

A hitherto unknown manuscript from the 1620s, whose only extant copies appear to be in Dublin, shows the balance of trade being forcefully developed, without the concern for the East India Trade that marks Thomas Mun. It goes on to consider economic and monetary policy, particularly the relative valuation of gold and silver, more closely.