Meditation while walking has a long, noble history in ancient spiritual disciplines.

I think it's worth trying to do something about obvious sources of stress in your life. But even more important is learning and practicing methods to neutralize the harmful effects of stress on the body and mind. There are many possibilities, anything from meditation and yoga to listening to relaxing music. My personal favorite is simple breathing techniques - they're very effective, take very little time, and they're free.

Even low-calorie diets and vigorous exercise fail to work in the long term for at least some people.

I fully support a national health care program for the U.S.

Each day as I travel through downtown Tucson, I am amazed at how quickly the most ancient of human behaviors have changed. For as long as there have been Homo sapiens - roughly 200,000 years - people have filled their lives principally with two activities: talking directly with other people, and doing physical things.

The world is beset by many problems, but in my opinion, this hijacking of our brain's reward centers by electronic media is potentially one of the most destructive.

It is unrealistic to want to be happy all the time.