Timothy Paul Smith is an adjunct associate professor at Dartmouth College, in Hanover, New Hampshire, where he has taught in the physics department and the
environmental studies program. He also writes about science, alternative energy, and the people who make these things happen. Smith is the author of Hidden
Worlds: Hunting for Quarks in Ordinary Matter (Princeton University Press, 2003) and has a new book coming out this winter from Oxford University Press, How Big Is Big And How Small Is Small: The Sizes of Everything and Why.