Barbara Sherwood Lollar is the Professor in Earth Sciences at the University of Toronto. She is also the Dr. Norman Keevil Chair in Ore Deposits Geology. In 2019, she was awarded the Herzberg Gold Medal by the Natural Sciences and Engineering Research Council of Canada (NSERC) for her contributions to science. This year, she won the Killam Prize for Natural Sciences, awarded by the Canada Council for the Arts.