Bacterial flagellar motor

What do you think of the state of biology today? It has indeed changed in many ways, and to the good. Molecular biology has come into its own and provides enormous power to answer new and old questions in such areas as development, physiology, and cell biology. The use of mathematical tools has become increasingly effective in shedding light on ecological and evolutionary problems, and other matters, such as the functioning of the nervous system. And there have been increasing applications of physical principles to biological problems. This has changed the way we teach, or rather what we teach. Biology is indeed evolving, yet I like to think that we are not throwing out where many of us started: the fascination with natural history.