Leonard Duda, PhD, retired from Sandia National Laboratories after 37 years. He has been involved with many volunteer science education activities including as a NASA/JPL Solar System Ambassador, Sandia National Labs./DOE Science Bowl, Science Olympiad, regional and state science fairs, and the Explora Science Center. He was Grand Awards judge co-chair at the Regeneron (formerly Intel) International Science and Engineering Fair for many years.