摘要:The price of carbon dioxide emission permits in the EU Emissions Trading System (ETS) has fallen precipitously – from highs of €29 per tonne of CO 2 in July 2008 to €4 per tonne of CO 2 in March 2013. This has caused concern among environmentalists, which is pe- culiar. The emission targets are being met. The costs of compliance are low. We should rejoice.