In Iowa, Newt Gingrich Can't Shake Nancy Pelosi Global Warming AdBy David Anderson | Yahoo! Contributor Network – 11 hrs ago COMMENTARY | If Newt Gingrich goes on to lose his fight for the Republican presidential nomination, he may look back at his decision to co-star in a 2006 global warming television ad with Nancy Pelosi as the moment that doomed his campaign. Gingrich, who served as House Speaker from 1995-1999, fielded yet another question about the ad during a New Years Day campaign event at LJs Neighborhood Bar and Grill in Waterloo, Iowa. His answer was captured on video...