A scientist with top cigarette maker Philip Morris today testified his company invested hundreds of millions of dollars in alternative cigarette ideas. Tobacco companies are trying to refute claims by the state and Blue Cross Blue Shield that they agreed not to develop less hazardous products. Minnesota Public Radio's Laura McCallum reports... Clifton Lilly, vice president for technology for Philip Morris, has spent more than three decades working for the maker of Marlboro cigarettes, and said he smokes them himself. Speaking methodically, the white-haired 63-year-old detailed the company's research into alternative products, ranging fro