Oil and Governance (IMAGE) Stanford University Caption According to a new book, "Oil and Governance," state-owned oil companies dominate the world's oil supplies, and the meddling of politicians often results in excessive pollution, poor company performance and more volatile oil prices. Credit Cambridge University Press Usage Restrictions Graphics, photographs and videos provided by the Precourt Institute for Energy at Stanford University are to be used - with appropriate credit - for editorial purposes only. Flopping, altering or otherwise embellishing these images in any way that changes the editorial content of the images is prohibited. Permission is for one-time use only. Supplied image file must be deleted after use. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.