Senator John Kerry mentions mountaintop removal, true costs of coal in letter to Washington Post Answers to ‘Greenhouse Guessing’ Tuesday, November 21, 2006; Page A26 https://www.washingtonpost.com/wp-dyn/content/article/2006/11/20/AR2006112001133.html In “Greenhouse Guessing” [op-ed, Nov. 10], Robert J. Samuelson called for candor about the…