摘要：With limited participation in an international climate agreement, standard economic
analysis suggests that a unilateral action taken by a group of countries in order to
reduce its emissions is likely to be undermined by increases in emissions from other
countries (carbon leakage). While analyses of carbon leakage typically have
regarded the technology in each country as given, abatement technologies are
endogenous, and thus technology development may be affected by environmental
policies. We demonstrate that with endogenous technologies and technology
diffusion between countries, it is no longer obvious that reduced emissions in some
countries will increase emissions in other countries. We identify cases in which
reduced emissions in some countries might reduce emissions also in other countries.
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