It's worthy of scientific study. I can tell you none have been planned. But it is tobacco.And all tobacco contains any number of chemicals that are harmful.

Anything that can give us a clue about survival is important. Like many other things of this kind, we hope it just opens the door to new research.

There are a lot of people just using the quick relievers now. If those are not available, that could be a very serious problem.

There is an ongoing discussion of whether this should be used across the board as an effective way of screening for cancer.

We're gambling with other things in the environment or genes or both, ... The fact that Jennings smoked for a long period of time increased his risk of getting lung cancer. How much that risk was dissipated by stopping for 20 years I don't know, but it was obviously not entirely.

When a problem comes along, study it until you are completely knowledgeable. Then find that weak spot, break the problem apart, and the rest will be easy.