Are climate policies good or bad for growth? Many policy makers who are trying to implement such policies are promising positive growth effects not only in the long run of 50 to 100 years, when effective climate policies will help to mitigate the potentially catastrophic economic consequences of...

<em>This report is co-authored by <a href="http://simpatic.eu/author/antoine-dechezlepretre/" target="_blank">Antoine Dechezleprêtre</a>, Grantham Research Institute on Climate Change and the Environment, London School of Economics; and  Myra Mohnen, University College London.</em> How much should governments subsidize the development of new clean technologies? We...