Reuters: Trade in the world greenhouse gas emissions market rose 80 percent last year as climate change became a greater concern for more companies, a carbon analysis said on Friday. Global carbon credit trade rose to $60 billion in 2007, from $33 billion the previous year, according to Point Carbon. Total traded volume in the global market reached 2.7 billion tonnes of greenhouse emissions reductions in 2007, a 64 percent jump in the same period. The UN’s climate panel last year …