the tobacco problem: what do you think? - part 14 of 28. presents historical perspective and timely data on the smoking habit and health risks. although ad campaigns continue to glamorize smoking, researchers demonstrate that heavy smoking now is known to - constricted lungs stock videos & royalty-free footage00:32The Tobacco Problem: What Do You Think? - part 14 of 28. Presents historical perspective and timely data on the smoking habit and health risks. Although ad campaigns continue to glamorize smoking, researchers demonstrate that heavy smoking now is known toBiological Cell, Problems