| Title | Source | Date |
|---|---|---|
| Chances dim for climate-change legislation | Fortune Magazine | May 29, 2008 |
| Congress and Climate Change | Washington Post | January 7, 2008 |
| In Twilight of His Career, Warner Now an Environmental Maverick | The Washington Post | December 6, 2007 |
| Getting the message, at last | The Economist | November 14, 2007 |
| Cap-and-trade bill is second-rate | Los Angeles Times | October 24, 2007 |
