Molecular dynamics (MD) simulation of protein helps to study motion and its development with time which may not be studied experimentally. Because of the tremendous advancement in hardware and software computer technologies in recent years, longer and more realistic molecular dynamics (MD) simulations of a protein are possible now in reasonable periods of time. In this presentation, Dr. Thapa explains how he has used molecular dynamics to conduct research on the Norwalk virus, a major cause of epidemic gastroenteritis in humans.