Her long-time concern about climate change, related to both political and environmental disaster in the Middle East, has recently led her to explore big oil territory. [Note on sources: Thanks to both Michael Klare, who suggested the tar sands topic, and Andrew Nikiforuk, who shared information by e-mail. Nikiforuk's book Tar Sands: Dirty Oil and the Future of a Continent should be required reading on this topic. Thanks also to Anthony Swift and Susan Casey-Lefkowitz of The National Resources Defense Council for supplying additional information about the differences between DilBit oil spills and ones. NRDC's crucial report, "Tar Sands Pipelines Safety Risks," can be read in .pdf format by clicking here.]