Seattle Post-Intelligencer: A team of Northwest scientists report that it has figured out how to better chemically trap carbon dioxide gas underground and plan to field-test the approach early next year, aiming to prove this as a powerful weapon in the battle against climate change. “We see this as a significant scientific milestone,” said Pete McGrail, leader of the carbon sequestration research project at the Pacific Northwest National Laboratory. McGrail presented his team’s findings in Washington, D.C., …