(Photo: CC/Library of Congress)

Bad news for climate-savers: According to the latest estimates by the International Energy Agency (IEA), energy-related carbon-dioxide (CO2) emissions were the highest ever meted in history. After a dip in 2009, that was caused by the global financial crisis, the emissions have climbed to a record of 30.6 Gigatonnes (Gt) in 2010. Thats a jump of 5% from the previous record year in 2008, when levels reached 29.3 Gt, the IEA claims. In addition, the IEA has estimated that 80% of projected emissions from the power sector in 2020 are already locked in, as they will come from power plants that are currently in place or under construction today.

During the latest UN climate change talks in Cancun in 2010 global leaders actually agreed to a target of limiting temperature increase to 2°Ct. To achieve this goal, the long-term concentration of greenhouse gases in the atmosphere must be strictly limited.