The gleaming white Sapphire Princess docked in this deep-water port this month, unloading its passengers and taking on another 2,600 guests headed first to Glacier Bay and, eventually, Vancouver, B.C. Every day of that trip the cruise ship — whose Web site invites passengers to see Alaska’s “pristine landscapes” — will emit the same amount of sulfur dioxide as 13.1 million cars, according to the Environmental Protection Agency, and as much soot as 1.06 million cars. Read full article >>