Business Green: Disappointment over an apparent lack of progress at the latest round of informal UN-backed climate talks last week were tempered by the news US Secretary of State Hillary Clinton is determined to begin work to break the deadlock between the US and China over emission targets on her trip to the country this week. Clinton, who arrived in Tokyo today on her first international trip since taking up her post in Barack Obama’s administration, said that brokering a US-Sino climate change …