Bloomberg: A United Nations climate group said it may be possible to extend emission caps included in the Kyoto Protocol for two years after they expire in 2012, preventing an interruption in the supply of offset credits. Extending the targets may help stop a “gap” in the Clean Development Mechanism, the world’s second-biggest carbon market, should nations fail to agree on a treaty to replace or permanently extend the 1997 protocol, a committee for developed nations said in a July 20 discussion …