TOKYO -- Doubts about the quality of carbon credits are holding back a market that should be central to the fight against climate change, according to a group of experts trying to bring order to a largely unregulated area of finance.
Global effort to bring order to $1bn market, free cash to fight climate change

The carbon credit market tripled in size last year, according to research group Ecosystem Marketplace. (Source photos by Reuters and AP)
TOKYO -- Doubts about the quality of carbon credits are holding back a market that should be central to the fight against climate change, according to a group of experts trying to bring order to a largely unregulated area of finance.