By Randall Denley, Ottawa Citizen, April 16, 2015

A cap and trade system like the one Ontario has just announced is a complex and
unsatisfactory way to deal with the issue of greenhouse gas emissions. If one
assumes that producing less air pollution is a generally desirable outcome, it’s
not at all clear how a system that involves government selling pollution permits
will achieve that goal. via
Denley: Cap and trade is a revenue generator | Ottawa Citizen.