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“The Voracity Effect” and Climate Change: The Impact of Clean  Technologies / Hassan Benchekroun and Amrita Ray Chaudhuri, FEEM, 2011,  33 p. (note di lavoro ; 2011.005)http://www.feem.it/userfiles/attach/20111181532164NDL2011-005.pdfWe show that a technological breakthrough that reduces CO2 emissions per  output can exacerbate the climate change problem: countries may respond  by raising their emissions resulting in an increase of the stock of  pollution that may reduce welfare. Using parameter values based on  empirical evidence we obtain that any 'new technology' that reduces the  emissions of CO2 per dollar of GDP by less than 76% from their current  level is welfare reducing. Developing clean technologies as well as  transferring “cleaner” technologies to developing countries make a  global post-Kyoto agreement over the control of emissions all the more  urgent. (© FEEM)