Across the globe, Google, Amazon, Facebook, Apple and Microsoft have accumulated power in ways that existing regulatory and intellectual frameworks struggle to comprehend. A consensus is emerging that the power of these new digital monopolies is unprecedented, and that it has important...

Contents: Part I. Measurement of financial-sector competition -- 1. Market power: competition among measures / Sherrill Shaffer and Laura Spierdijk -- 2. The Panzar-Rosse revenue test and market power in banking: an empirical illustration / Sherrill Shaffer and Laura Spierdijk -- 3. Adapting...

Emissions taxes, tradeable emission permits and voluntary compliance policies are becoming the instruments of choice in controlling environmental problems at the national and international level. Careful design of these policies in second-best environments is a very important factor for their...