Spain's high-speed rail ridership takes off.

Energy brokers in White Plaines, N.Y., hope their idea of paying people a few bucks to put on a sweater instead of turning up the heat might be more effective than finger wagging.

The system for industrial carbon quotas could allow 10 firms to collect surplus CO2 permits worth $4.3 billion by 2012.

European carbon market comes to a screeching halt after hackers use a phishing scheme to steal $4 million in emissions credits.

Unless energy consumption remains low, Britain likely to lag behind EU neighbors.

Winter Games host focuses on LEED certification, alternative transportation and carbon offsets for construction and (hopefully) travelers.

My Emissions Exchange just sold its first carbon credit on behalf of the Wilsons, a family in Harrisburg, Penn.

Forestry officials warn investors of the government's history of financial mismanagement before millions of dollars are spent on the greenhouse gas offset scheme.

Clients of the Cueto Law Group in Miami, Fla., can now pay up to 20% of their legal fees with carbon credits.

Russia and the Ukraine hope to keep the abundance of carbon credits that they receive under the Kyoto Protocol.