Carbon Positive: EU carbon market authorities, exchanges and traders are scrambling to defuse the threat that trading in recycled CER carbon credits poses for the credibility of the world’s biggest carbon market. News that the Hungarian government had on-sold CERs already used for compliance in the EU ETS has been followed by reports more such trades have occurred. This has sent a wave of concern through the market amid fears that market confidence may be undermined by the trading of credits that have no …