Supporters and foes of TransCanada Corp. (TRP) ’s Keystone XL pipeline are bracing for the release of an environmental analysis from the U.S. government that could determine the $5.4 billion project’s fate. While the report isn’t the final step, it’s eagerly anticipated because it will answer a question central to whether President Barack Obama approves the project: would Keystone contribute significantly to climate change? Obama has said he wouldn’t support the pipeline if it were found to substantially boost carbon-dioxide emissions that many scientists say are raising the Earth’s temperature. “If that report comes out and it says Keystone is not going to have a significant climate impact, it will be hard for Obama to ignore his own agency’s finding,” said Ross Hammond, senior campaigner for Friends of the Earth, an environmental group based in Washington and Berkeley, California . Keystone has emerged as a flashpoint in the debate […]