schwit1 writes: Abuse of the carbon offset system may have caused emissions to increase by as much as 600 million tons. That's the finding of a new report from the Stockholm Environment Institute, which investigated carbon credits used to offset greenhouse gas emissions under a UN scheme. As one of the co-authors of the report put it, issuing these credits "was like printing money." From the article: "In some projects, chemicals known to warm the climate were created and then destroyed to claim cash. As a result of political horse trading at UN negotiations on climate change, countries like Russia and the Ukraine were allowed to create carbon credits from activities like curbing coal waste fires, or restricting gas emissions from petroleum production. Under the UN scheme, called Joint Implementation, they then were able to sell those credits to the European Union's carbon market. Companies bought the offsets rather than making their own more expensive, emissions cuts. But [the studey] says the vast majority of Russian and Ukrainian credits were in fact, "hot air" — no actual emissions were reduced.