A new survey undertaken by the Corporate Europe Observatory (CEO) finds that most think tanks [3] in the European Union fail to disclose their funding sources, which is also kept secret by the large corporations that provide much of their financial support. A particularly problematic example is that of ExxonMobil [4], which "continues to fuel the work of climate skeptic think tanks and lobby groups in North America and Europe," while keeping much of its funding for these groups secret.