After the tragedy of September 11, 2001, it is somewhat comforting to know that we have young women and men who view life in all its rudeful and beautiful complexities and are on the offense to not only solve problems but be themselves the actors in the solutions.

Yet the old tradition of the spiritual quest, reinforced by the influence of Renaissance hermeticism, could still capture the imagination of highly religious persons.

Vertebrates are limited to two eyes each, but the variations they have played on this plain vanilla starting point are an object lesson in how much can be made from a little.

Abnormal function [of the temporomandibular joint], in turn, may be the result of a structural problem such as dental malocclusion or a functional problem such as bruxism (clenching and grinding of the teeth).