Rogoff on Global Warming

My Harvard colleague Ken Rogoff remains a member in good standing of the Pigou Club:

As an American, I am appalled, ashamed, and embarrassed by my country's lack of leadership in dealing with global warming....

a wide range of economists favour a uniform ("harmonized") global tax that would tax carbon emissions equally everywhere in the world, and from whatever source - whether coal, oil, or gas, and whether consumers or businesses.