1000 Years Ago These Were Called "Papal Indulgences"

A recent study by Stewart Barr, a geographer at the UK's University of Exeter, found that people who identified as committed environmentalists actually flew more than those who didn't.  Some of these "bleeding-heart jet setters" insisted they'd earned their flights through green behavior at home. "People tell themselves they can justify a flight of 5,000 miles because they've recycled all year," Barr told me.