Over the past decades, polluting firms and government bodies have come to rely increasingly on specialized suppliers for the necessary goods, technologies and services that would alleviate their environmental footprint. These suppliers now form a large and growing industry, the so-called...

It is well-known that an efficient pollution taxation scheme should charge each source according to its specific marginal contribution to social damages. Despite significant advances in environmental assessment and data analysis, this requirement would impose technical, informational and...