State's attorneys in Minnesota's tobacco trial are expected to begin cross-examining a historian who testified yesterday that Minnesotans have long known about the health risks of smoking. University of Minnesota history professor Hy Berman told jurors the public has known cigarettes were hazardous more than 100 years ago. Minnesota public radio's Elizabeth Stawicki reports: The tobacco companies are trying to poke holes in the State's contention they lied, covered-up and deceived the public about the dangers of smoking. History professor Hy Berman told jurors Minnesotans have known smoking is hazardous to health for decades from their schoolbooks, teachers and press coverage. He said Minnesota school teachers have taught students about the h