MICHAEL A. COPLAND and MEREDITH I. HONIG are associate
professors of educational leadership and policy
studies at the University of Washington, Seattle.
A paper by Ross McKitrick, an economics
professor at the University of Guelph, and Patrick
Michaels, an environmental
studies professor at the University of Virginia, concludes that half of the global warming trend from 1980 to 2002 is caused by Urban Heat Island.