I was extremely disturbed to hear that transportation, and in particular the halting of highway expansion, was not chosen as one of the Sierra Club's top priorities. It is also the largest U.S. contributor to global warming. They are a big factor in the loss of biodiversity and its consequent extinctions. It increases per capita energy consumption and pollutant emission. It is impossible to drill for oil, log, or even deluge the wilderness with tourists without roads.
Roads are key.