There are some colorful characters in the field of aging studies. Here, The Times profiles Dr. Denham Harman, who first developed the free radical theory of aging. His views are interesting, to say the least, especially since he thinks life expectancy will not increase much past 85 years! Of course, I and many scientists differ with Dr. Harman on that count, but I can't fault his dedication to his work. It's an interesting article, well worth reading.