Those of you who have a deep interest in meditation might like to check out a somewhat technical article on meditation -- especially interesting for its discussion of a study reported last year in the Proceedings of the National Academy of Science, regarding the neural activity of meditation students and experienced meditators (Tibetan Buddhist monks with 15 to 40 years of experience). The study showed noticeable differences in the neural activity of novice and experienced meditators, but also, and rather more interestingly, evidence that suggests long-term changes in the brains of such long-term meditators.