On February 8, 2019, Caltech hosted its Winter Faculty Party, where 2018 Nobel Prize Winner in Chemistry, Frances H. Arnold was honored. In attendance were Donna and Benjamin M. Rosen, who joined Arnold in Stockholm for the prestigious Nobel Prize ceremony. The Benjamin M. Rosen Family Foundation of New York has generously endowed the Rosen Bioengineering Center at Caltech with $18 million dollars, and have made a bequest commitment to advance scientific exploration at the intersection of biology and engineering. Arnold currently sits as the center's Director. Benjamin M. Rosen is a life member of Caltech's Board of Trustees, where he served as Chairman from 2001-2005, after joining in 1986. During her speech, Arnold surprised the Rosens by graciously giving them her Nobel Prize Medal. The evening was a joyous celebration of outstanding scientific achievement, friendship and Caltech camaraderie.